# helmert_transformation_table

auth_name: EPSG
name: RGF93 v2b to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EPSG-Fra
description:
Approximation at the 1m level assuming that ETRS89 is equivalent to WGS 84 within the accuracy of the transformation. (RGF93 v2b is a national realization of ETRS89).


auth_name: EPSG
name: RGF93 v1 to RGF93 v2 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IGN-Fra
description:
Maximum differences are 0.1m in both horizontal and vertical. Distortions in RGF93 v1 are irregular and IGN considers that no systematic transformation to the improved v2 adjustment is possible.


auth_name: EPSG
name: LUREF to ETRS89 (5)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: ACT-Lux MB 2014
description:
LUREF 2014 parameters. For an equivalent CT using the Coordinate Frame method see CT 9899. Defines LUREF between 2014 and 2020. Replaces LUREF 2006 parameters (CT 5483). Info source gives this CT in reverse direction. Derived using ETRF2000 @2013-01-27.


auth_name: EPSG
name: LUREF to ETRS89 (6)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: ACT-Lux CF 2014
description:
LUREF 2014 parameters. For an equivalent CT using the Molodensky-Badekas method see CT 9898. Defines LUREF between 2014 and 2020. Replaces LUREF 2006 parameters (CT 5485). Info source gives this CT in reverse direction. Derived using ETRF2000@2013-01-27.


auth_name: EPSG
name: UCS-2000 to ETRS89 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Ukr SSGC
description:
Rounded parameter values taken from UCS-2000 to ITRF2000 (1) (code 7817) assuming that ETRS89 is equivalent to ITRF2000 within the accuracy of the transformation.


auth_name: EPSG
name: Camacupa 1948 to RSAO13 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Ago B7 old
description:
Parameter values taken from Camacupa 1948 to WGS 84 (6) (code 1323) assuming that RSAO13 is coincident with WGS 84 within the accuracy of the transformation. Equivalent to concatenation of EPSG:1323 and EPSG:8819.


auth_name: EPSG
name: Camacupa 1948 to RSAO13 (4)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IOGP-Ago B16
description:
Parameter values taken from Camacupa 1948 to WGS 84 (9) (code 1326) assuming that RSAO13 is coincident with WGS 84 within the accuracy of the transformation. Equivalent to concatenation of EPSG:1326 and EPSG:8819.


auth_name: EPSG
name: Malongo 1987 to RSAO13 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Ago Cab90
description:
Parameter values taken from Malongo 1987 to WGS 84 (2) (code 1557) assuming that RSAO13 is coincident with WGS 84 within the accuracy of the transformation. Equivalent to concatenation of EPSG:1557 and EPSG:8819.


auth_name: EPSG
name: Hong Kong 1980 to Hong Kong Geodetic CS (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: LSD-HKG 2002
description:
Derived via ITRF96 @ 1998.121. Published 2002-03-01. Also published as a transformation to WGS 84 - see Hong Kong 1980 to WGS 84 (1) (code 1825).


auth_name: EPSG
name: LUREF to ETRS89 (7)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: ACT-Lux MB 2020
description:
LUREF 2020 parameters. For an equivalent CT using the Coordinate Frame method see CT 9938. Defines LUREF from 2020. Replaces LUREF 2014 parameters (CT 9898). Info source gives this CT in reverse direction. Derived using ETRF2000 @2013-01-27.


auth_name: EPSG
name: LUREF to ETRS89 (8)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: ACT-Lux CF 2020
description:
LUREF 2020 parameters. For an equivalent CT using the Molodensky-Badekas method see CT 9937. Defines LUREF from 2020. Replaces LUREF 2014 parameters (CT 9899). Info source gives CT in reverse direction. Derived using ETRF2000 @2013-01-27.


auth_name: EPSG
name: WGS 84 (Transit) to WGS 84 (G730) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: KD2022-Wld
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. Derived through ITRF90 and ITRF91 at epoch 1990.5. Parameter values valid at other epochs including 2005.0.


auth_name: EPSG
name: WGS 84 (G730) to WGS 84 (G873) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: KD2022-Wld
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. Derived via ITRF91 through ITRF94 at epoch 1995.5. Parameter values valid at other epochs including 2005.0.


auth_name: EPSG
name: WGS 84 (G873) to WGS 84 (G1150) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: KD2022-Wld
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. Derived via ITRF94 through ITRF2000. May be approximated to 0.2m using 7-parameter CF method 1032 with parameters for epoch 1999.50 of tX=1.1mm tY=-8.0mm tZ=14.3mm rX=0 rY=0 rZ=0.05mas dS=1.505ppb.


auth_name: EPSG
name: WGS 84 (G1150) to WGS 84 (G1674) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: KD2022-Wld
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. Derived via ITRF2005. May be approximated to 0.4m using 7-parameter CF method 1032 with parameters for epoch 2007.50 of tX=-2.65mm tY=1.35mm tZ=27.7mm rX=-0.27mas rY=027mas rZ=-0.38 mas dS=1.88ppb.


auth_name: EPSG
name: ITRF2014 to ITRF2020 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IERS-Wld
description:
IERS describes CT in opposite direction. Estimated using core network of 131 stations at 105 sites. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.


auth_name: EPSG
name: ITRF2008 to ITRF2020 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IERS-Wld
description:
IERS describes CT in opposite direction. Parameter values derived from those already published between ITRF2020, ITRF2014 and ITRF2008. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.


auth_name: EPSG
name: ITRF2005 to ITRF2020 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IERS-Wld
description:
IERS describes CT in opposite direction. Parameter values derived from the those between ITRF2020, ITRF2014 and ITRF2008 and those published between earlier realizations. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9.


auth_name: EPSG
name: Trinidad 1903 to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EOG-Tto Trin
description:
Parameter values provided to EOG by Trinidad Ministry of Energy and Energy Industries. Used by EOG offshore Trinidad (including Pelican, Kiskadee and Ibis fields) since 1996.


auth_name: EPSG
name: Aratu to WGS 84 (5)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EXM-Bra Santos
description:
Used by ExxonMobil for block BMS1. See WGS 84 (13) (tfm code 5051) which Petrobras now recommends for the area.


auth_name: EPSG
name: Aratu to WGS 84 (6)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EXM-Bra Campos
description:
Used by ExxonMobil for block BC10. Derived from earlier Shell position vector tfm of dX = -181m, dY = +294m, dZ = -144.5m, rX = rY = 0, rZ = +0.554s, dS = +0.219 ppm. See Aratu to WGS 84 (14) (tfm code 5053) which Petrobras now recommends for the area.


auth_name: EPSG
name: Aratu to WGS 84 (7)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EXM-Bra EspS
description:
Used by ExxonMobil for block BMES1. See Aratu to WGS 84 (15) (tfm code 5055) which Petrobras now recommends for the area.


auth_name: EPSG
name: Aratu to WGS 84 (8)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EXM-Bra Pel
description:
Used by ExxonMobil for block BP1. Also used by BG as part of a concatenated tfm to SAD69 for offshore regional studies. See WGS 84 (13) (tfm code 5051) for transformation Petrobras now recommends for the area.


auth_name: EPSG
name: Aratu to WGS 84 (9)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EXM-Bra off
description:
Used by ExxonMobil for offshore regional studies. See Aratu to WGS 84 (13) through (21) (tfm codes 5051-67 [odd numbers only]) which Petrobras now recommends for various areas.


auth_name: EPSG
name: KKJ to EUREF-FIN (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NLS-Fin JHS153
description:
In most areas accuracy is approximately 0.5m although in some areas it is in the order of 2m. Replaces KKJ to ETRS89 (1) (code 1638). YKJ to ETRS-TM35FIN (code 10703) using the TINshift method is recommended in preference to this transformation.


auth_name: EPSG
name: KKJ to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Fin JHS153
description:
Parameter values from KKJ to ETRS89 (2) (code 10098). Assumes ETRS89 and WGS 84 can be considered the same to within the accuracy of the transformation. Replaces KKJ to WGS 84 (1) (code 1639).


auth_name: EPSG
name: ITRF88 to ITRF89 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IERS-Wld 2020
description:
Parameter values derived from differences in CTs to ITRF2020 (codes 10104 and 10105). These supersede all values published in past IERS/ITRF documentation (CT code 9020). Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9.


auth_name: EPSG
name: ITRF89 to ITRF90 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IERS-Wld 2020
description:
Parameter values derived from differences in CTs to ITRF2020 (codes 10103 and 10104). These supersede all values published in past IERS/ITRF documentation (CT code 9021). Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9.


auth_name: EPSG
name: ITRF90 to ITRF91 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IERS-Wld 2020
description:
Parameter values derived from differences in CTs to ITRF2020 (codes 10100 and 10103). These supersede all values published in past IERS/ITRF documentation (CT code 9022). Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9.


auth_name: EPSG
name: ITRF91 to ITRF92 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IERS-Wld 2020
description:
Parameter values derived from differences in CTs to ITRF2020 (codes 9999 and 10100). These supersede all values published in past IERS/ITRF documentation (CT code 9023). Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9.


auth_name: EPSG
name: ITRF93 to ITRF94 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IERS-Wld 2020
description:
Parameter values derived from differences in CTs to ITRF2020 (codes 9997 and 9998). These supersede all values published in past IERS/ITRF documentation (CT code 9025). Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9.


auth_name: EPSG
name: MAGNA-SIRGAS 2018 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EPSG-Col
description:
See Datum 1329 remarks for conversion path between GeogCRSs "MAGNA-SIRGAS" and "MAGNA-SIRGAS 2018". CTs 10216, 10221, 10242-4 provide recommended conversions between ProjCRSs on "MAGNA-SIRGAS" and "MAGNA-SIRGAS 2018" using null Cartesian Offsets.


auth_name: EPSG
name: ITRF2020 to IGS20 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IGS-Wld
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. IGS20 is by definition aligned with ITRF2020.


auth_name: EPSG
name: IGb14 to IGS20 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IGS-Wld
description:
Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Parameter values from ITRF2014 to ITRF2020 (1) (code 9991) as IGb14 is aligned to ITRF2014 and IGS20 is aligned to ITRF2020.


auth_name: EPSG
name: RGSH2020 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EPSG-Dza
description:
For many purposes RGSH2020 can be considered to be coincident with WGS 84. This approximation ignores the low accuracy of the WGS 84 ensemble and the application of tectonic plate motion to WGS 84 data.


auth_name: EPSG
name: Nord Sahara 1959 to WGS 84 (11)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: INCT-Dza 2022
description:
Given by information source in direction WGS 84 to Nord Sahara 1959. Defines official relationship between WGS 84 and national geodetic system; epoch unspecified. Derived at approximately 40 points in northern Algeria; accuracy applies only to this area.


auth_name: EPSG
name: RGNC91-93 to RGNC15 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl 1m
description:
See RGNC91-93 to RGNC15 (2) (transformation code 10322) for authoritative transformation between these CRSs. This transformation is used only as the standard transformation T0 within that transformation.


auth_name: EPSG
name: BH_ETRS89 to ETRS89 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Bih
description:
BH_ETRS89 is a national realization of ETRS89. May be taken as approximate transformation BH_ETRS89 to WGS 84 - see code 10333.


auth_name: EPSG
name: BH_ETRS89 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Bih
description:
Approximation at the +/- 1m level assuming that ETRS89 is equivalent to WGS 84. BH_ETRS89 is a national realization of ETRS89.


auth_name: EPSG
name: ITRF2020 to NAD83(2011) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: NGS-Usa CONUS-AK PRVI
description:
Concatenation of joint US-Canada tfm NAD83(CORS96)>ITRF96 (CT code 6864) with IGS value for ITRF96>ITRF97 and IERS values for ITRF97>ITRF2020 CTs. Scale difference in ppb and rate in ppb/yr where 1/billion = 1E-9. See tfm 10415 for Canadian equivalent.


auth_name: EPSG
name: Nord Sahara 1959 to RGSH2020 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IOGP-Alg D3
description:
Parameter values taken from Nord Sahara 1959 to WGS 84 (4) (code 1815) assuming that RGSH2020 is coincident with WGS 84 within the accuracy of the transformation. CT 1815 used by BP in District 3 and In Salah Gas.


auth_name: EPSG
name: Nord Sahara 1959 to RGSH2020 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Alg InAm
description:
Parameter values taken from Nord Sahara 1959 to WGS 84 (5) (code 1816) assuming that RGSH2020 is coincident with WGS 84 within the accuracy of the transformation. Significant and varying differences (>100m) at 4 neighbouring astro stations.


auth_name: EPSG
name: Nord Sahara 1959 to RGSH2020 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Alg HBR
description:
Parameter values taken from Nord Sahara 1959 to WGS 84 (6) (code 1817) assuming that RGSH2020 is coincident with WGS 84 within the accuracy of the transformation. Derived at astro station Guerrara.


auth_name: EPSG
name: Nord Sahara 1959 to RGSH2020 (4)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Dza Mou
description:
Parameter values taken from Nord Sahara 1959 to WGS 84 (7) (code 15874) assuming that RGSH2020 is coincident with WGS 84 within the accuracy of the transformation. Derived at 11 stations. CT 15874 used by Equinor in Hassi Mouina.


auth_name: EPSG
name: Nord Sahara 1959 to RGSH2020 (5)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Dza Ahnet
description:
Parameter values taken from Nord Sahara 1959 to WGS 84 (8) (code 5630) assuming that RGSH2020 is coincident with WGS 84 within the accuracy of the transformation. Derived at 1 station (L38).


auth_name: EPSG
name: Nord Sahara 1959 to RGSH2020 (6)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Alg Ain Tsila
description:
Parameter values taken from Nord Sahara 1959 to WGS 84 (10) (code 7442) assuming that RGSH2020 is coincident with WGS 84 within the accuracy of the transformation. Significant and varying differences (>100m) known to exist in neighbouring astro stations.


auth_name: EPSG
name: ITRF2020 to NAD83(CSRS)v8 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: NRC-Can CSRSv8
description:
Concatenation of joint Canada-US tfm NAD83>ITRF96 (see tfm code 8259) with IGS value for ITRF96>ITRF97 and IERS values for ITRF97>ITRF2020 transformations. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.


auth_name: EPSG
name: NAD83(CSRS)v7 to NAD83(2011) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: ISO-N Am
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. Source and target CRSs defined from ITRF2014 by common transformations (codes 8970 and 8265).


auth_name: EPSG
name: NAD83(CSRS)v8 to NAD83(2011) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: ISO-N Am
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. Source and target CRSs defined from ITRF2020 by common transformations (codes 10334 and 10415).


auth_name: EPSG
name: NAD83(CSRS)v2 to NAD83(CSRS)v3 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NRCan-Can 1997
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. NAD83(CSRS)v2 and NAD83(CSRS)v3 are referenced to the same coordinate reference epoch (1997.00) and considered compatible with each other at the centimetre level.


auth_name: EPSG
name: NAD83(CSRS)v6 to NAD83(CSRS)v7 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NRCan-Can 2010
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. NAD83(CSRS)v6 and NAD83(CSRS)v7 are referenced to the same coordinate reference epoch (2010.00) and considered compatible with each other at the centimetre level.


auth_name: EPSG
name: NAD83(CSRS)v6 to NAD83(CSRS)v8 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NRCan-Can 2010
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. NAD83(CSRS)v6 and NAD83(CSRS)v8 are referenced to the same coordinate reference epoch (2010.00) and considered compatible with each other at the centimetre level.


auth_name: EPSG
name: NAD83(CSRS)v7 to NAD83(CSRS)v8 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NRCan-Can 2010
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. NAD83(CSRS)7 and NAD83(CSRS)v8 are referenced to the same coordinate reference epoch (2010.00) and considered compatible with each other at the millimetre level.


auth_name: EPSG
name: GDM2000 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Mys 1m
description:
Approximation at the +/- 1m level assuming that GDM2000 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: ITRF2020 to ETRF2020 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: EUREF-Eur
description:
Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. See ITRF2020 to ETRF2020 (2) (code 10573) for an exactly equivalent transformation but with the transformation's parameter values at epoch 2015.00.


auth_name: EPSG
name: ITRF2020 to ETRF2020 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: EUREF-Eur 2024
description:
Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9. See ITRF2020 to ETRF2020 (1) (code 10572) for transformation which defines ETRF2020. This CT 10573 is equivalent to 10572 but with parameter values at epoch 2015.00.


auth_name: EPSG
name: ITRF2014 to Segara (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: PHM-Idn Mhk 2023
description:
Replaces transformation Segara to WGS 84 (4) (code 1838). Computed by PT Pageo Utama and PT Bhumi Warih Geohydromatics in May 2023. Transformation parameters were derived at epoch 2022.00.


auth_name: EPSG
name: WGS 84 (G2139) to WGS 84 (G2296) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NGA-Wld 2024.0
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. Calculated by extrapolating the position and velocity of the seventeen WGS 84 GPS monitoring sites to the epoch 2024.00.


auth_name: EPSG
name: WGS 84 (G2296) to ITRF2020 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NGA-Wld 2024.0
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. Accuracy of 1cm applies at epoch 2024.0. Due to subsequent drift between the reference frames it may reach 2cm at other epochs.


auth_name: EPSG
name: Saba to BES2020 Saba (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NSGI-Bes Saba 2020
description:
For the reverse transformation from BES2020 Saba to Saba, method 1140 [used here] is reversible using the same parameter values with the reverse formulas (see GN7-2). However, the official BESTRANS document applies the same formulas for both the forward and reverse transformations, but uses different parameter values for the reverse transformation.


auth_name: EPSG
name: Saba to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IOGP-Bes Saba
description:
Parameter values taken from Saba to BES2020 Saba (1) (transformation code 10646) assuming that BES2020 Saba is coincident with WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: RGM04 to RGM23 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IGN-Myt 10cm
description:
Approximation at the +/- 0.1m level. For more accurate official transformation see RGM04 to RGM23 (2) (code 10683).


auth_name: EPSG
name: EUREF-FIN to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Fin
description:
Approximation at the +/- 1m level assuming that ETRS89 is equivalent to WGS 84. EUREF-FIN is a national realization of ETRS89.


auth_name: EPSG
name: EUREF-FIN to ETRS89 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Fin
description:
EUREF-FIN is a national realization of ETRS89. May be taken as approximate transformation EUREF-FIN to WGS 84 - see code 10701.


auth_name: EPSG
name: Sint Eustatius to BES2020 Sint Eustatius (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NSGI-Bes SEu 2020
description:
For the reverse transformation from BES2020 Sint Eustatius to Sint Eustatius, method 1140 [used here] is reversible using the same parameter values with the reverse formulas (see GN7-2). However, the official BESTRANS document applies the same formulas for both the forward and reverse transformations, but uses different parameter values for the reverse transformation.


auth_name: EPSG
name: Bonaire to Bonaire 2004 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NSGI-Bes Bon
description:
For the reverse transformation from Bonaire 2004 to Bonaire, method 1133 [used here] is reversible using the same parameter values with the reverse formulas (see GN7-2). However, the official BESTRANS document applies the same formulas for both the forward and reverse transformations, but uses different parameter values for the reverse transformation.


auth_name: EPSG
name: Bonaire to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IOGP-Bes Bon
description:
Parameter values taken from Bonaire to Bonaire 2004 (1) (transformation code 10766) assuming that Bonaire 2004 is coincident with WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: UZGD2024 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Uzb 1m
description:
Approximation at the +/- 1m level assuming that UZGD2024 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: ITRF2020 to KSA-GRF17 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: GEOSA-Sau
description:
Derived by combining the IERS transformation from ITRF2020 to ITRF2014 at epoch 2017.0 (code 9991) with ITRF2014 to KSA-GRF17 transformation (code 9334).


auth_name: EPSG
name: ITRF2020 to ITRF2020-u2023 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IERS-Wld
description:
The alignment of ITRF2020-u2023 to ITRF2020 implies that all transformation parameters between ITRF2020-u2023 and ITRF2020 are zero.


auth_name: EPSG
name: ITRF2020-u2023 to IGb20 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IGS-Wld
description:
Scale difference in ppb where 1/billion = 1E-9 or nm/m. IGb20 is by definition aligned with ITRF2020-u2023.


auth_name: EPSG
name: IGS20 to IGb20 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IGS-Wld
description:
Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Parameter values from ITRF2020 to ITRF2020-u2023 (1) (code 10782) as IGS20 is aligned to ITRF2020 and IGb20 is aligned to ITRF2020-u2023.


auth_name: EPSG
name: UGRF to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EPSG-Uga
description:
Approximation at the +/- 1m level assuming that UGRF is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: LibRef21 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IOGP-Lbr
description:
Approximation at the +/- 1m level assuming that LibRef21 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: Sint Eustatius to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IOGP-Bes Seu
description:
Parameter values taken from Sint Eustatius to BES2020 Sint Eustatius (1) (transformation code 10750) assuming that BES2020 Sint Eustatius is coincident with WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: Georgia Geodetic Datum to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NAPR-Geo 2013
description:
Derived at 5 stations. Note: information source states that the Helmert formula use the Position Vector convention, but using the station coordinates tabulated in the report IOGP believes that the parameter values are consistent with use of the coordinate frame rotation convention.


auth_name: EPSG
name: Pulkovo 1942 to Georgia Geodetic Datum (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NAPR-Geo 2014
description:
Derived at 16 stations. Replaces transformation derived at 9 stations given in "Methodology and Parameters for Datum Transformation between the New and Old Reference Systems", European Union ENPI Programme for Georgia National Agency of Public Registry (NAPR), Ministry of Justice of Georgia, November 14th 2013. Note: information source states that the Helmert formula use the Position Vector convention, but using the station coordinates tabulated in the report IOGP believes that the parameter values are consistent with use of the coordinate frame rotation convention.


auth_name: EPSG
name: LKS-2020 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: Vzd-Lva
description:
LKS-2020 is the second national realization of ETRS89 and coincident to WGS 84 within 1 metre. This transformation has an accuracy equal to the coincidence figure.


auth_name: EPSG
name: ITRF2020 to PNG94 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: OSG-Png
description:
Transformation derived by inversion of seven site velocities within the transformation coverage area. Transformation accuracy at 2σ is 0.15 m between 1994.0 and 2035.0 for locations within Papuan Foreland. Transformation precision degrades in plate margin deforming zone (PFTB) near plate boundary with NGH and Woodlark plates. Transformation not valid outside stated extent.


auth_name: EPSG
name: ETRF2014 to ETRF2000 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IOGP-Eur 2000
description:
Derived from concatenation of ETRF2014 to ITRF2014 (CT code 8880, with direction reversed) reduced to epoch 2000.00 and ITRF2014 to ETRF2000 (CT code 8405) reduced to epoch 2000.00. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.


auth_name: EPSG
name: ETRF97 to ETRF2000 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IOGP-Eur 2000
description:
Derived from concatenation of ETRF97 to ITRF97 (CT code 7939, with direction reversed) reduced to epoch 2000.00 and ITRF97 to ETRF2000 (CT code 7949) reduced to epoch 2000.00. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.


auth_name: EPSG
name: ETRF96 to ETRF2000 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: EUREF-Eur 2000
description:
Derived from concatenation of ETRF96 to ITRF96 (CT code 7938, with direction reversed) reduced to epoch 2000.00 and ITRF96 to ETRF2000 (CT code 7948) reduced to epoch 2000.00. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.


auth_name: EPSG
name: CSRN2025.0 (NAD83 2011) to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EPSG-Usa CA
description:
For many purposes CSRN2025.0 (NAD83 2011) can be considered to be coincident with WGS 84. This approximation ignores the ~2.2m offset of CSRN2025.0 (NAD83 2011) from the geocentre, the low accuracy of the WGS 84 ensemble and the application of tectonic plate motion to WGS 84 data.


auth_name: EPSG
name: ETRF93 to ETRF2000 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: EUREF-Eur 2000
description:
Derived from concatenation of ETRF93 to ITRF93 (CT code 7936, with direction reversed) reduced to epoch 2000.00 and ITRF93 to ETRF2000 (CT code 7946) reduced to epoch 2000.00. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.


auth_name: EPSG
name: CSRN2025 (ITRF2020) to CSRN2025 (NAD83 2011) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: SOPAC-Usa CA
description:
Parameter values derived from time-dependent transformation ITRF2020 to NAD83(2011) (CT code 10334) reduced to the CSRN2025 (ITRF2020) and CSRN2025 (NAD83 2011) common anchor epoch 2025.00. Defines CSRN2025 (NAD83 2011).


auth_name: EPSG
name: ITRF2020 to GR96(2021) (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: KDS-Grl
description:
Derived from the IGS20 coordinates at epoch 2021.6164 of 7 stations including the four passive stations used to define GR96(1996). Validated at 26 other stations.


auth_name: EPSG
name: Ammassalik 1958 to GR96 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: KDS-Grl 2021
description:
Determined through the GR96(1996) coordinates of 34 points, standard deviation 0.2m. Replaces Ammassalik 1958 to GR96 (1) (code 15900).


auth_name: EPSG
name: Qoornoq 1927 to GR96 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: KDS-Grl 2021
description:
Determined through the GR96(1996) coordinates of 3881 points, standard deviation 4.0m. Replaces Qoornoq 1927 to GR96 (1) (code 15957).


auth_name: EPSG
name: Scoresbysund 1952 to GR96 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: KDS-Grl 2021
description:
Determined through the GR96(1996) coordinates of 628 points, standard deviation 5.1m. Replaces Scoresbysund 1952 to GR96 (1) (code 15899).


auth_name: EPSG
name: QazTRF-23 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EPSG-Kaz
description:
Approximation at the +/- 1m level assuming that QazTRF-23 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NATRF2022 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EPSG-N Am
description:
For many purposes NATRF2022 can be considered to be coincident with WGS 84. This approximation ignores the low accuracy of the WGS 84 ensemble and the application of tectonic plate motion to WGS 84 data.


auth_name: EPSG
name: ETRF89 to ETRF2000 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
rate_translation_uom_auth_name: EPSG
rate_rotation_uom_auth_name: EPSG
rate_scale_difference_uom_auth_name: EPSG
epoch_uom_auth_name: EPSG
operation_version: IOGP-Eur 2000
description:
Derived from concatenation of ETRF89 to ITRF89 (CT code 7932, with direction reversed) reduced to epoch 2000.00 and ITRF89 to ETRF2000 (CT code 7942) reduced to epoch 2000.00. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.


auth_name: EPSG
name: CR-SIRGAS epoch 2019.24 to CR-SIRGAS epoch 2014.59 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGN-Cri 2020
description:
Derived at 45 stations. Note that rotation convention (position vector) differs from that used in the transformation from CR05 to CR-SIRGAS epoch 2014.59 (code 9751).


auth_name: EPSG
name: Tokyo to JGD2000 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: GSI-Jpn
description:
Derived at Tokyo datum origin. Accuracy on main islands 9m. Also used on remote islands with significantly less accuracy: Io-To 793m, Kitadaito and Minamidaito Jima 642m, Tarama and Minna Shima 560m, Ishigaki and Taketomi Jima 251m, Yonaguni Jima 248m.


auth_name: EPSG
name: Tokyo to WGS 84 (108)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Jpn
description:
Parameter values from Tokyo to JGD2000 (1) (code 15483). Assumes JGD2000 and WGS 84 can be considered the same to within the accuracy of the transformation.


auth_name: EPSG
name: SAD69 to SIRGAS 2000 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IBGE-Bra 5m 1994
description:
Accuracy generally better than 1m except in Amazon basin where it degenerates to 5m. May be used as CT between SAD69(96) and SIRGAS 2000 and between SAD69 and WGS 84 - see tfm codes 5881 and 5882. Used by Petrobras and ANP throughout Brazil from 1994.


auth_name: EPSG
name: Kalianpur 1962 to WGS 84 (6)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: omv-Pak Gambat
description:
Derived by Fugro-Geodetic in 2004 at 6 closely-spaced stations. Used by OMV in all blocks in Pakistan where operator.


auth_name: EPSG
name: Accra to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Gha 1
description:
Derived via WGS 72BE. Found in use within oil industry erroneously concatenated via WGS 72. See tfm code 8571.


auth_name: EPSG
name: Kalianpur 1962 to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: utp-Pak Badin
description:
Derived at station S0001, an approximate offset to Survey of India primary station Kat Baman, in 1992 from 180 single point Transit passes observed in 1991 by Fugro-Geodetic for UTP.


auth_name: EPSG
name: Minna to WGS 84 (12)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: WGC-Nga 211
description:
Derived via WGS 72(BE). Minna to WGS 72(BE) transformation derived in 1981 for Mobil E&P Nigeria (MEPCON) by Geodetic Survey through Transit translocation at six stations in southern Nigeria. Used by MEPCON in blocks OPL 215 and 221.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGAC-Col CF reg 1
description:
May be taken as transformation to WGS 84 - see tfm code 15715. See Bogota 1975 to MAGNA-SIRGAS (9), tfm code 15730, for an equivalent transformation using the Molodenski-Badekas 10-parameter method. OGP recommends this alternative.


auth_name: EPSG
name: Bogota 1975 to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Col reg 1
description:
Parameter values taken from Bogota 1975 to MAGNA-SIRGAS (1) (tfm code 15714). Approximation assumes that MAGNA-SIRGAS is equivalent to WGS 84. Accuracy about 1 part in 10^5 of distance between points, depending on relative tectonic motion.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGAC-Col CF reg 2
description:
May be taken as transformation to WGS 84 - see tfm code 15717. See Bogota 1975 to MAGNA-SIRGAS (10), tfm code 15731, for an equivalent transformation using the Molodenski-Badekas 10-parameter method. OGP recommends this alternative.


auth_name: EPSG
name: Bogota 1975 to WGS 84 (4)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Col reg 2
description:
Parameter values taken from Bogota 1975 to MAGNA-SIRGAS (2) (tfm code 15716). Approximation assumes that MAGNA-SIRGAS is equivalent to WGS 84. Accuracy about 1 part in 10^5 of distance between points, depending on relative tectonic motion.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGAC-Col CF reg 3
description:
May be taken as transformation to WGS 84 - see tfm code 15719. See Bogota 1975 to MAGNA-SIRGAS (10), tfm code 15732, for an equivalent transformation using the Molodenski-Badekas 10-parameter method. OGP recommends this alternative.


auth_name: EPSG
name: Bogota 1975 to WGS 84 (5)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Col reg 3
description:
Parameter values taken from Bogota 1975 to MAGNA-SIRGAS (3) (tfm code 15718). Approximation assumes that MAGNA-SIRGAS is equivalent to WGS 84. Accuracy about 1 part in 10^5 of distance between points, depending on relative tectonic motion.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (4)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGAC-Col CF reg 4
description:
May be taken as transformation to WGS 84 - see tfm code 15721. See Bogota 1975 to MAGNA-SIRGAS (10), tfm code 15733, for an equivalent transformation using the Molodenski-Badekas 10-parameter method. OGP recommends this alternative.


auth_name: EPSG
name: Bogota 1975 to WGS 84 (6)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Col reg 4
description:
Parameter values taken from Bogota 1975 to MAGNA-SIRGAS (4) (tfm code 15720). Approximation assumes that MAGNA-SIRGAS is equivalent to WGS 84. Accuracy about 1 part in 10^5 of distance between points, depending on relative tectonic motion.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (5)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGAC-Col CF reg 5
description:
May be taken as transformation to WGS 84 - see tfm code 15723. See Bogota 1975 to MAGNA-SIRGAS (10), tfm code 15734, for an equivalent transformation using the Molodenski-Badekas 10-parameter method. OGP recommends this alternative.


auth_name: EPSG
name: Bogota 1975 to WGS 84 (7)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Col reg 5
description:
Parameter values taken from Bogota 1975 to MAGNA-SIRGAS (5) (tfm code 15722). Approximation assumes that MAGNA-SIRGAS is equivalent to WGS 84. Accuracy about 1 part in 10^5 of distance between points, depending on relative tectonic motion.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (6)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGAC-Col CF reg 6
description:
May be taken as transformation to WGS 84 - see tfm code 15725. See Bogota 1975 to MAGNA-SIRGAS (10), tfm code 15735, for an equivalent transformation using the Molodenski-Badekas 10-parameter method. OGP recommends this alternative.


auth_name: EPSG
name: Bogota 1975 to WGS 84 (8)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Col reg 6
description:
Parameter values taken from Bogota 1975 to MAGNA-SIRGAS (6) (tfm code 15724). Approximation assumes that MAGNA-SIRGAS is equivalent to WGS 84. Accuracy about 1 part in 10^5 of distance between points, depending on relative tectonic motion.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (7)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGAC-Col CF reg 7
description:
May be taken as transformation to WGS 84 - see tfm code 15727. See Bogota 1975 to MAGNA-SIRGAS (10), tfm code 15736, for an equivalent transformation using the Molodenski-Badekas 10-parameter method. OGP recommends this alternative.


auth_name: EPSG
name: Bogota 1975 to WGS 84 (9)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Col reg 7
description:
Parameter values taken from Bogota 1975 to MAGNA-SIRGAS (7) (tfm code 15726). Approximation assumes that MAGNA-SIRGAS is equivalent to WGS 84. Accuracy about 1 part in 10^5 of distance between points, depending on relative tectonic motion.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (8)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGAC-Col CF reg 8
description:
May be taken as transformation to WGS 84 - see tfm code 15729. See Bogota 1975 to MAGNA-SIRGAS (10), tfm code 15737, for an equivalent transformation using the Molodenski-Badekas 10-parameter method. OGP recommends this alternative.


auth_name: EPSG
name: Bogota 1975 to WGS 84 (10)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Col reg 8
description:
Parameter values taken from Bogota 1975 to MAGNA-SIRGAS (8) (tfm code 15728). Approximation assumes that MAGNA-SIRGAS is equivalent to WGS 84. Accuracy about 1 part in 10^5 of distance between points, depending on relative tectonic motion.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (9)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGAC-Col MB reg 1
description:
Source also quotes an equivalent transformation using the Coordinate Frame 7-parameter method - see Bogota 1975 to MAGNA-SIRGAS (1), tfm code 15714.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (10)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGAC-Col MB reg 2
description:
Source also quotes an equivalent transformation using the Coordinate Frame 7-parameter method - see Bogota 1975 to MAGNA-SIRGAS (2), tfm code 15716.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (11)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGAC-Col MB reg 3
description:
Source also quotes an equivalent transformation using the Coordinate Frame 7-parameter method - see Bogota 1975 to MAGNA-SIRGAS (3), tfm code 15718.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (12)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGAC-Col MB reg 4
description:
Source also quotes an equivalent transformation using the Coordinate Frame 7-parameter method - see Bogota 1975 to MAGNA-SIRGAS (4), tfm code 15720.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (13)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGAC-Col MB reg 5
description:
Source also quotes an equivalent transformation using the Coordinate Frame 7-parameter method - see Bogota 1975 to MAGNA-SIRGAS (5), see tfm code 15722.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (14)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGAC-Col MB reg 6
description:
Source also quotes an equivalent transformation using the Coordinate Frame 7-parameter method - see Bogota 1975 to MAGNA-SIRGAS (6), tfm code 15724.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (15)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGAC-Col MB reg 7
description:
Source also quotes an equivalent transformation using the Coordinate Frame 7-parameter method - see Bogota 1975 to MAGNA-SIRGAS (7), tfm code 15726.


auth_name: EPSG
name: Bogota 1975 to MAGNA-SIRGAS (16)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: IGAC-Col MB reg 8
description:
Source also quotes an equivalent transformation using the Coordinate Frame 7-parameter method - see Bogota 1975 to MAGNA-SIRGAS (8), tfm code 15728.


auth_name: EPSG
name: Amersfoort to ETRS89 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NCG-Nld 2004 CF
description:
Replaces Amersfoort to ETRS89 (1) (tfm code 1751). Replaced by Amersfoort to ETRS89 (5) (tfm code 4830). Dutch sources also quote an equivalent transformation using the Molodenski-Badekas 10-parameter method (M-B) - see tfm code 15740.


auth_name: EPSG
name: Amersfoort to ETRS89 (4)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
pivot_uom_auth_name: EPSG
operation_version: NCG-Nld 2004 MB
description:
Replaces Amersfoort to ETRS89 (2) (tfm code 1066). Replaced by Amersfoort to ETRS89 (6) (tfm code 4831). Dutch sources also quote an equivalent transformation using the Coordinate Frame 7-parameter method - see tfm code 15739.


auth_name: EPSG
name: Deir ez Zor to WGS 84 (6)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: Tot-Syr Deir 2005
description:
Derived 2005 at 5 triangulation stations and using (EGM96 geoid model +1.15m). Used by Total/DEZPC for Jafra and Mazraa seismic surveys. Can be approximated using geocentric translations of dX=-190.6m, dY=+8.8m, dZ=+239.6m.


auth_name: EPSG
name: BD72 to ETRS89 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGN-Bel 0.2m
description:
May be taken as approximate transformation BD72 to WGS 84 - see code 15749. Scale difference is given by information source as 1.0000012747. Given in this record in ppm to assist application usage.


auth_name: EPSG
name: BD72 to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGN-Bel 0.2m
description:
Parameter values from BD72 to ETRS89 (2) (code 15748). Scale difference is given by information source as 1.0000012747. Given in this record in ppm to assist application usage.


auth_name: EPSG
name: Aratu to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: PB-Bra BC BS ES
description:
Mean for 3 basins. See Aratu to WGS 84 (10) through (12) (codes 15710-12) for transformations for individual basins. Replaced by Aratu to WGS 84 (13) through (15) (tfm codes 5051, 5053 and 5055) which Petrobras now recommends for the areas.


auth_name: EPSG
name: Minna to WGS 84 (14)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: Elf-Nga-OML58
description:
Derived in 1995 at unspecified DMA ADOS stations and Racal stations M101 and ZVS3003. Used by Elf in onshore Block OML 58.


auth_name: EPSG
name: RGPF to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGN-Pyf
description:
Transformation is to original definition of WGS 84. It is consistent with later WGS 84 realisations G730, G873 and G1150 to no better than 1m.


auth_name: EPSG
name: Moorea 87 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Pyf
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from Moorea 87 to RGPF (1) (tfm code 15757).


auth_name: EPSG
name: Tahaa 54 to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Pyf
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from Tahaa 54 to RGPF (1) (tfm code 15758).


auth_name: EPSG
name: Maupiti 83 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: EPSG-Pyf
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from Maupiti 83 to RGPF (1) (tfm code 15759).


auth_name: EPSG
name: Fatu Iva 72 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Pyf
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from Fatu Iva 72 to RGPF (1) (tfm code 15760).


auth_name: EPSG
name: IGN63 Hiva Oa to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Pyf HivaOa
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from IGN63 Hiva Oa to RGPF (1) (tfm code 15761).


auth_name: EPSG
name: IGN63 Hiva Oa to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Pyf Tahuata
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from IGN63 Hiva Oa to RGPF (2) (tfm code 15762).


auth_name: EPSG
name: IGN72 Nuku Hiva to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Pyf NukuHiva
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from IGN72 Nuku Hiva to RGPF (1) (tfm code 15763).


auth_name: EPSG
name: IGN72 Nuku Hiva to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Pyf UaHuka
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from IGN72 Nuku Hiva to RGPF (2) (tfm code 15764).


auth_name: EPSG
name: IGN72 Nuku Hiva to WGS 84 (4)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Pyf UaPou
description:
Approximation at the +/- 1m level assuming that RGPF is equivalent to WGS 84. Parameter values taken from IGN72 Nuku Hiva to RGPF (2) (tfm code 15765).


auth_name: EPSG
name: Gulshan 303 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Bgd rounded
description:
Derived at origin station in Dhaka. Source information given to 3 decimal places but rounded by OGP to be commensurate with stated accuracy. For consistency with Survey of Bangladesh, Gulshan 303 to WGS 84 (2) [code 9679] should be preferred.


auth_name: EPSG
name: Campo Inchauspe to POSGAR 94 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IGM-Arg
description:
Adopted from U.S. Defense Mapping Agency values for Campo Inchauspe to WGS 84 (tfm code 1127) assuming that POSGAR 94 is equivalent to WGS 84.


auth_name: EPSG
name: IGN53 Mare to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IGN-Ncl Mare
description:
Withdrawn by information source and replaced by improved information from local authority - see tfm code 15901.


auth_name: EPSG
name: AGD66 to WGS 84 (16)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Aus 5m
description:
Parameter values from AGD66 to GDA94 (1) (code 1278). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.


auth_name: EPSG
name: AGD84 to WGS 84 (8)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Aus 5m
description:
Parameter values from AGD84 to GDA94 (1) (code 1279). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.


auth_name: EPSG
name: Mhast (offshore) to WGS 72BE (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: CHV-Ago Cab
description:
Derived by Oceaneering for CABGOC in 1979. Mean of parameters derived by single point Transit translocation at 2 stations (Mongo Tando and N'To). Applied to single point Transit translocations at other stations to define Mhast (offshore) coordinates.


auth_name: EPSG
name: Malongo 1987 to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: CHV-Ago Cab87
description:
Derived via WGS 72BE by Geodetic for Chevron in 1987 by single point Transit translocation at 1 station (Malongo Y). Replaced in 1989 by Malongo 1987 to WGS 84 (1) (code 1330).


auth_name: EPSG
name: Tern Island 1961 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DMA-Usa HI Tern
description:
Derived at 1 satellite station. Same transformation parameter values related to same datum area given in original 1987 DMA TR8350.2 edition for Sorol Atoll.


auth_name: EPSG
name: Ayabelle Lighthouse to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DMA-Dji
description:
Derived at 1 satellite station. Accuracy 25m in each axis. Replaced by Ayabelle Lighthouse to WGS 84 (2) (code 6907).


auth_name: EPSG
name: Johnston Island 1961 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DMA-Umi Johnston
description:
Derived at 2 satellite stations. Accuracy +/- 25m in each axis. Note: NGA online html files carry a different dZ value - OGP believe this is an erroneous transcription from the TR8350.2 line above.


auth_name: EPSG
name: PN84 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DMA-Esp Canary
description:
Determined at 1 satellite station. Accuracy +/- 25m in each axis. Unclear from information source whether the source CRS is PN68 or PN84 - see also CT code 9743. Given the accuracy, can be considered to apply to either.


auth_name: EPSG
name: Midway 1961 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DMA-Umi Midway 1987
description:
Derived at 1 satellite station. Accuracy +/- 25m in each axis. Information source states "provided for historical purposes only. These parameter [values] should not be used". Replaced by Midway 1961 to WGS 84 (2) (tfm code 15818).


auth_name: EPSG
name: Midway 1961 to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DMA-Umi Midway 2003
description:
Derived at 1 satellite station. Accuracy +/- 25m in each axis. Replaces Midway 1961 to WGS 84 (1) (tfm code 15817).


auth_name: EPSG
name: Hong Kong 1963(67) to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: UKHO-Hkg
description:
Derived at 2 satellite stations. Accuracy +/- 1m. Care: does not use Hong Kong 1963 (code 4838) as the source CRS.


auth_name: EPSG
name: PZ-90 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: GiK-World
description:
Derived through Glonass and GPS at 30 stations throughout USSR - Former Soviet Union (FSU). Accuracy better than 1.5 metres.


auth_name: EPSG
name: Pulkovo 1942 to PZ-90 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: GiK-Rus
description:
Derived through Glonass at 30 stations throughout USSR - Former Soviet Union (FSU). Mandated for use in Russia by GosStandard of Russia Decree #327 of August 9, 2001.


auth_name: EPSG
name: Pampa del Castillo to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: UNO-Arg ComRiv
description:
Transformation parameter precision given to millimetres in information source but due to accuracy rounded to nearest decimetre for EPSG database.


auth_name: EPSG
name: Egypt Gulf of Suez S-650 TL to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: Racal-Egy GoS
description:
Sometime referred to as "Egypt 1907 to WGS 84". However, application to WGS 84 coordinates of the reverse of this tfm results in Gulf of Suez S-650 TL, not Egypt 1907, position. Gulf of Suez S-650 TL and Egypt 1907 CRSs differ by some 20 metres.


auth_name: EPSG
name: Beduaram to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: ELF-Ner SE 91
description:
Used by Elf / CGG between December 1991 and March 1992. Probably derived from results of concatenated tfm Beduaram to WGS 84 (1) (code 8634).


auth_name: EPSG
name: Mauritania 1999 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Mau
description:
Mauritania 1999 can be considered to be the same as WGS 84 within the accuracy of this transformation.


auth_name: EPSG
name: Pulkovo 1942 to WGS 84 (16)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: OGP-Rus
description:
Derived via PZ-90 at 30 stations throughout USSR (Former Soviet Union, FSU) through concatenation of Pulkovo 1942 to PZ-90 (1) (tfm code 15844) and PZ-90 to WGS 84 (1) (tfm code 15843).


auth_name: EPSG
name: RD/83 to ETRS89 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: BKG-Deu Sach
description:
Derived in 2001 at 31 points of the German GPS Network DREF in former East Germany. Although for high accuracy limited to Saxony, may be taken as approximate transformation between DHDN and WGS 84 for all former East German states - see code 15869.


auth_name: EPSG
name: DHDN to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: OGP-Deu E
description:
Parameter values taken from RD/83 to ETRS89 (1) (tfm code 15868) assuming that within the accuracy of the transformation ETRS89 is equivalent to WGS 84 and RD/83 is equivalent to DHDN.


auth_name: EPSG
name: Nahrwan 1967 to WGS 84 (6)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: IGN-Irq
description:
Derived by concatenation of parameter values published by IGN Paris from Nahrwan 1967 to WGS 72 at the Nahrwan SE Base trig station near Baghdad with DMA WGS 72 to WGS 84 parameter values.


auth_name: EPSG
name: Karbala 1979 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OEC-Irq Bas
description:
Derived from shifts in UTM rectangular coordinates for one point in Basra area provided by Iraq National Oil Exploration Company. Replaced by Karbala 1979 to WGS 84 (2) (tfm code 5078).


auth_name: EPSG
name: Douala 1948 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: Tot-Cmr
description:
Derived at Manoca tower assuming the pyramid on the tower and the centre of the tower reservoir are co-located. This assumption carries a few metres uncertainty.


auth_name: EPSG
name: Nord Sahara 1959 to WGS 84 (7)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: ENG-Dza Mou
description:
Derived at 11 stations throughout blocks 317b, 319b, 321b and 322b. Network based on station P4 (horizontal) and benchmark RN51 (vertical) using EGM96 geoid height. Used by Equinor in Hassi Mouina. May be taken as a transformation to RGSH2020 (CT 10342).


auth_name: EPSG
name: Fiji 1956 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DGC-Fji
description:
Derived at 20 stations. Also published by NGA in GeoTrans v3.4 software with parameter values rounded to integer.


auth_name: EPSG
name: Fiji 1986 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: OGP-Fji
description:
Approximation at the +/- 2m level assuming that Fiji 1986 is equivalent to WGS 72. Parameter values taken from WGS 72 to WGS 84 (1) (tfm code 1237).


auth_name: EPSG
name: Fiji 1986 to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: FD-Fji
description:
Horizontal accuracy 2m, vertical accuracy approximately 40 metres. Suitable for GIS mapping purposes but not rigorous surveying. Very similar results may be obtained through Fiji 1986 to WGS 84 (1) (tfm code 15876).


auth_name: EPSG
name: Vanua Levu 1915 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Fji
description:
Parameter values taken from Viti Levu 1912 to WGS 84 (1) (tfm code 15897). Approximation at the +/- 50m level assuming that CRS 4748 is equivalent to CRS 4752 within the transformation accuracy. Source CRSs 4748 and 4752 are independent but connected.


auth_name: EPSG
name: GR96 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Grl
description:
Approximation at the +/- 1m level assuming that GR96 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: ST87 Ouvea to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl
description:
Parameter values taken from ST87 Ouvea to RGNC91-93 (1) (code 15885) assuming that RGNC91-93 is equivalent to WGS 84 to within the accuracy of the transformation.


auth_name: EPSG
name: IGN72 Grande Terre to RGNC91-93 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl 2m
description:
Determined in May 2001. May be taken as approximate transformation to WGS 84 - see IGN72 Grande Terre to WGS 84 (3) (code 15903).


auth_name: EPSG
name: IGN56 Lifou to RGNC91-93 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl 1m
description:
Determined in April 1993. May be taken as approximate transformation to WGS 84 - see IGN56 Lifou to WGS 84 (3) (code 15902).


auth_name: EPSG
name: IGN53 Mare to RGNC91-93 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl 2m
description:
Determined in April 1993, modified in December 1999. May be taken as approximate transformation to WGS 84: see IGN53 Mare to WGS 84 (3) (code 15901).


auth_name: EPSG
name: ST87 Ouvea to RGNC91-93 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl 1m
description:
Determined in December 1999. May be used as approximate transformation to WGS 84 - see ST87 Ouvea to WGS 84 (2) (code 15881).


auth_name: EPSG
name: NEA74 Noumea to RGNC91-93 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl 1m
description:
Determined in July 2000. May be taken as approximate transformation to WGS 84 - see NEA74 Noumea to WGS 84 (3) (code 15904).


auth_name: EPSG
name: Viti Levu 1912 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DMA-Fji
description:
Derived at 1 satellite station. Accuracy +/-25m in each axis. Replaced by Viti Levu 1912 to WGS 84 (2) (code 6895).


auth_name: EPSG
name: IGN53 Mare to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl v3
description:
Parameter values taken from IGN53 Mare to RGNC91-93 (1) (code 15884) assuming that RGNC91-93 is equivalent to WGS 84 to within the accuracy of the transformation.


auth_name: EPSG
name: IGN56 Lifou to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl v3
description:
Parameter values taken from IGN56 Lifou to RGNC91-93 (1) (code 15883) assuming that RGNC91-93 is equivalent to WGS 84 to within the accuracy of the transformation.


auth_name: EPSG
name: IGN72 Grande Terre to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl v3
description:
Parameter values taken from IGN72 Grande Terre to RGNC91-93 (1) (code 15882) assuming that RGNC91-93 is equivalent to WGS 84 to within the accuracy of the transformation.


auth_name: EPSG
name: NEA74 Noumea to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: BGN-Ncl
description:
Parameter values taken from NEA74 Noumea to RGNC91-93 (1) (code 15886) assuming that RGNC91-93 is equivalent to WGS 84 to within the accuracy of the transformation.


auth_name: EPSG
name: ID74 to DGN95 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: Bak-Idn
description:
Derived at 38 stations. Standard deviations of translations are 1.3, 1.1 and 3.6m, of rotations 0.11, 0.06 and 0.04 sec and ppm 0.18. May be taken as a tfm ID74 to WGS 84 - see tfm 1833.


auth_name: EPSG
name: DGN95 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Idn
description:
Approximation at the +/- 1m level assuming that DGN95 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: Beijing 1954 to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: GSI-Chn SCS
description:
Derived via WGS 72BE. Original transformation derived by GSI in 1980-81. The GSI memo incorrectly gave the parameters as from WGS 72 to Beijing 1954, but it has been determined by the OGP that the memo should have stated from Beijing 1954 to WGS 72BE.


auth_name: EPSG
name: JAD69 to JAD2001 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: NLA-Jam
description:
Accuracy 0.3 to 0.5 metres. May be used as tfm to WGS 84 - see JAD69 to WGS 84 (3) (tfm code 15927).


auth_name: EPSG
name: JAD69 to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: UT-Jam 1m
description:
Derived at 4 stations, tested at a further 9. Also used as tfm to JAD69 to JAD2001 (see code 15926). Note: Info source paper contains an error in sign of dS, subsequently confirmed by primary author and NLA of Jamaica, and corrected in this record.


auth_name: EPSG
name: BD72 to ETRS89 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGN-Bel 0.2m
description:
May be taken as approximate transformation BD72 to WGS 84 - see code 15929. Scale difference is given by information source as -1.0000012747. Given in this record in ppm to assist application usage.


auth_name: EPSG
name: BD72 to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: IGN-Bel 1m
description:
Parameter values from BD72 to ETRS89 (2) (code 15928) assuming that ETRS89 is equivalent to WGS 84 within the accuracy of the tfm. Scale difference is given by information source as -1.0000012747; given in this record in ppm to assist application usage.


auth_name: EPSG
name: NAD83(NSRS2007) to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-USA conus AK
description:
Approximation assuming that NAD83(NSRS2007) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: Amersfoort to WGS 84 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: OGP-Nld 2004
description:
Parameter values from Amersfoort to ETRS89 (3) (tfm code 15739) assuming that ETRS89 is equivalent to WGS 84 within the accuracy of the transformation. Replaces Amersfoort to WGS 84 (2) (code 1672). Replaced by Amersfoort to WGS 84 (4) (tfm code 4833).


auth_name: EPSG
name: Nahrwan 1967 to WGS 84 (7)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: TOT-UAE Abd
description:
Parameter values adopted by Total are mean of those derived by Oceonics and Geoid through ties at station TC58 to 4 IGS stations in March 1995.


auth_name: EPSG
name: Nahrwan 1967 to WGS 84 (9)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DPC-UAE Fat
description:
Used by DPC for Al Fateh field. Applying this transformation gives same result as Nahrwan 1967 to WGS 84 (8) (code 15938).


auth_name: EPSG
name: ED50 to WGS 84 (42)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: DGEG-Por off
description:
Developed by the Portuguese Hydrographic Institute and used by the Directorate of Energy and Geology.


auth_name: EPSG
name: HTRS96 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Hrv
description:
Approximation at the +/- 1m level assuming that ETRS89 is equivalent to WGS 84. HTRS96 is a regional realization of ETRS89.


auth_name: EPSG
name: Bermuda 1957 to BDA2000 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: LBS-Bmu
description:
Derived in 1998 at 12 stations. Used for transformation of 1:2500 mapping. May be taken as approximate transformation Bermuda 1957 to WGS 84 - see code 15970.


auth_name: EPSG
name: Bermuda 1957 to WGS 84 (2)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: OGP-Bmu
description:
Parameter values from Bermuda 1957 to BDA2000 (1) (code 15969). Assumes BDA2000 and WGS 84 can be considered the same to within the accuracy of the transformation.


auth_name: EPSG
name: NZGD49 to WGS 84 (4)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OSG-Nzl 5m
description:
These parameter values are taken from NZGD49 to NZGD2000 (1) (code 1566) and assume that NZGD2000 and WGS 84 are coincident to within the accuracy of the tfm. For better accuracy use NZGD49 to WGS 84 (2) (code 1564) or NZGD49 to WGS 84 (3) (code 1670).


auth_name: EPSG
name: Slovenia 1996 to WGS 84 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
operation_version: OGP-Svn
description:
Approximation at the +/- 1m level assuming that ETRS89 is equivalent to WGS 84. Slovenia 1996 is a national realization of ETRS89.


auth_name: EPSG
name: AGD66 to GDA94 (12)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: ICSM-Aus off
description:
Use only offshore: onshore, transformations 1458 (ACT), 1594 (Tas), 1460 (NSW and Vic) and 1595 (NT) are more accurate.


auth_name: EPSG
name: AGD66 to WGS 84 (18)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: EPSG-Aus off
description:
Parameter values from AGD66 to GDA94 (12) (code 15979). Assumes WGS 84 is equivalent to GDA94; ignores low accuracy of ensemble and tectonic plate motion. Use only offshore: onshore CTs 1665-68 for ACT, NSW/Vic, Tas and NT respectively are more accurate.


auth_name: EPSG
name: MGI to Slovenia 1996 (1)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: GuRS-Svn
description:
Info source also gives a separate reverse tfm with slightly different parameter values. Given the tfm accuracy these differences are not significant and this tfm can be considered reversible. May be taken as approximate tfm MGI to WGS 84 (see code 15982)


auth_name: EPSG
name: MGI to WGS 84 (9)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: OGP-Svn 96
description:
Parameter values from MGI to Slovenia 1996 (1) (code 15981). Assumes Slovenia 1996 and WGS 84 can be considered the same to within the accuracy of the transformation.


auth_name: EPSG
name: Pulkovo 1942(58) to ETRS89 (3)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: ANCPI-Rom 2007
description:
Withdrawn and replaced by S-42 to ETRS89 (4) (tfm code 15994). Consistent with Transdat v2.0 to better than 10m.


auth_name: EPSG
name: Pulkovo 1942(58) to ETRS89 (4)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: ANCPI-Rom 2008
description:
Replaces S-42 to ETRS89 (3) (tfm code 15993). Consistent with Transdat v3.0 to better than 0.5m. May be taken as approximate transformation Pulkovo 1942(58) to WGS 84 - see code 15995.


auth_name: EPSG
name: Pulkovo 1942(58) to WGS 84 (19)
method_auth_name: EPSG
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: OGP-Rom
description:
Parameter values taken from Pulkovo 1942(58) to ETRS89 (4) (code 15994) assuming that ETRS89 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: IGNF
code: TSG682
method_auth_name: EPSG
source_crs_auth_name: IGNF
source_crs_code: ATIG
target_crs_auth_name: IGNF
target_crs_code: NTF
translation_uom_auth_name: EPSG
operation_version: 1.0.0
name:
ANCIENNE TRIANGULATION DES INGENIEURS GEOGRAPHES (ATIG) vers NOUVELLE TRIANGULATION DE LA FRANCE (NTF)


auth_name: IGNF
code: TSG779
method_auth_name: EPSG
source_crs_auth_name: IGNF
source_crs_code: TAHAA53
target_crs_auth_name: IGNF
target_crs_code: RGPF
translation_uom_auth_name: EPSG
rotation_uom_auth_name: EPSG
scale_difference_uom_auth_name: EPSG
operation_version: 1.0.0
name:
IGN53 (IGN RAIATEA-TAHAA) RAIATEA-TAHAA-BORA BORA-HUAHINE vers RGPF (RESEAU GEODESIQUE DE POLYNESIE FRANCAISE)


# grid_transformation

auth_name: EPSG
name: Guam 1963 to NAD83(HARN) (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: guhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: guhpgn.los
operation_version: NGS-Gum
description:
NADCON method which expects longitudes positive west; EPSG GeogCRSs Guam 1963 and NAD83(HARN) (codes 4675 and 4152) have longitudes positive east. Can be used as approximation for tfm between Guam 1963 and WGS 84 - see tfm code 1069.


auth_name: EPSG
name: Guam 1963 to WGS 84 (2)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: guhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: guhpgn.los
operation_version: EPSG-Gum
description:
Parameter files are from Guam 1963 to NAD83(HARN) (1) (code 1068), but for many purposes NAD83(HARN) can be considered to be coincident with WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD27 to NAD83 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: conus.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: conus.los
operation_version: NGS-Usa Conus
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRS NAD27 (code 4267) and NAD83 (code 4269) have longitudes positive east. For application in Gulf of Mexico refer to IOGP report 373-26.


auth_name: EPSG
name: NAD27 to NAD83 (2)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: alaska.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: alaska.los
operation_version: NGS-Usa AK
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRS NAD27 (code 4267) and NAD83 (code 4269) have longitudes positive east. May be used as transformation to WGS 84 - see NAD27 to WGS 84 (85) (code 15864).


auth_name: EPSG
name: RGNC91-93 to NEA74 Noumea (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: RGNC1991_NEA74Noumea.gsb
operation_version: ESRI-Ncl 0.05m
description:
Emulation using NTv2 method of tfm NEA74 Noumea to RGNC91-93 (3) (code 15943). Note reversal of sign of parameter values in grid file.


auth_name: EPSG
name: NAD27 to NAD83 (3)
method_auth_name: EPSG
method_name: NTv1
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NTv1_0.gsb
operation_version: GC-Can NT1
description:
Uses NTv1 method. Replaced in Quebec by code 1462 and elsewhere in 1997 by NTv2 (transformation code 1313). Input expects longitudes to be positive west; EPSG GeogCRS NAD27 (code 4267) and NAD83 (code 4269) have longitudes positive east.


auth_name: EPSG
name: NAD27 to NAD83 (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NTv2_0.gsb
operation_version: GC-Can NT2
description:
Uses NTv2 data files. Replaces NTv1 (transformation code 1312) except in Quebec. Input expects longitudes to be positive west; EPSG GeogCRS NAD27 (code 4267) and (code 4269) have longitudes positive east. May be used as tfm to WGS 84 - see code 1693.


auth_name: EPSG
name: NAD27(CGQ77) to NAD83 (1)
method_auth_name: EPSG
method_name: NTv1
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: PQV4.DAC
operation_version: SGQ-Can QC NT1
description:
Replaced by NAD27(CGQ77) to NAD83 (2) (code 1575). Uses NT method which expects longitudes positive west; EPSG GeogCRSs CGQ77 (code 4609) and NAD83 (code 4269) have longitudes positive east.


auth_name: EPSG
name: Old Hawaiian to NAD83 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: hawaii.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: hawaii.los
operation_version: NGS-Usa HI
description:
Accuracy 0.2m at 67% confidence level. Uses NADCON method which expects longitudes positive west; source and target CRSs have longitudes positive east. NADCON converts from Old Hawaiian Datum but makes the transformation appear to be from NAD27.


auth_name: EPSG
name: St. Lawrence Island to NAD83 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: stlrnc.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: stlrnc.los
operation_version: NGS-Usa AK StL
description:
Accuracy 0.5m at 67% confidence level. Uses NADCON method which expects longitudes positive west; source and target CRSs have longitudes positive east. NADCON data converts from St. Lawrence Datum but makes the transformation appear to be from NAD27.


auth_name: EPSG
name: St. Paul Island to NAD83 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: stpaul.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: stpaul.los
operation_version: NGS-Usa AK StP
description:
Accuracy 0.5m at 67% confidence level. Uses NADCON method which expects longitudes positive west; source and target CRSs have longitudes positive east. NADCON converts from St. Paul Datum but makes the transformation appear to be from NAD27.


auth_name: EPSG
name: St. George Island to NAD83 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: stgeorge.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: stgeorge.los
operation_version: NGS-Usa AK StG
description:
Accuracy 0.5m at 67% confidence level. Uses NADCON method which expects longitudes positive west; source and target CRSs have longitudes positive east. NADCON converts from St. George Datum but makes the transformation appear to be from NAD27.


auth_name: EPSG
name: Puerto Rico to NAD83 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: prvi.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: prvi.los
operation_version: NGS-PRVI
description:
Accuracy 0.05m at 67% confidence level. May be taken as approximate transformation Puerto Rico-WGS 84 - see code 15841.


auth_name: EPSG
name: NAD27 to NAD83 (5)
method_auth_name: EPSG
method_name: NTv1
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: GS2783v1.QUE
operation_version: SGQ-Can QC NT1
description:
Densification for Quebec of code 1312. Replaced by NAD27 to NAD83 (6) (code 1573). Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27 (code 4267) and NAD83 (code 4269) have longitudes positive east.


auth_name: EPSG
name: NAD27(76) to NAD83 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: May76v20.gsb
operation_version: SGQ-Can Ont
description:
Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27(76) (code 4608) and NAD83 (code 4269) have longitudes positive east. May be taken as approximate transformation NAD27(76) to WGS 84 - see code 1690.


auth_name: EPSG
name: AGD66 to GDA94 (5)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: vic_0799.gsb
operation_version: OSG-Aus Vic old
description:
Replaced by AGD66 to GDA94 (10) (code 1596) and then by AGD66 to GDA94 (11) (code 1803). Input expects longitudes to be positive west; EPSG GeogCRS AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: alhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: alhpgn.los
operation_version: NGS-Usa AL
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1717.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (2)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: azhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: azhpgn.los
operation_version: NGS-Usa AZ
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1728.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (3)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: cnhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: cnhpgn.los
operation_version: NGS-Usa CA n
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1739.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (4)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: cshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: cshpgn.los
operation_version: NGS-Usa CA s
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1750.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (5)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: cohpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: cohpgn.los
operation_version: NGS-Usa CO
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1712.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (6)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: gahpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: gahpgn.los
operation_version: NGS-Usa GA
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1713.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (7)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: flhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: flhpgn.los
operation_version: NGS-Usa FL
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1714.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (8)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: emhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: emhpgn.los
operation_version: NGS-Usa ID MT e
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1715.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (9)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wmhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wmhpgn.los
operation_version: NGS-Usa ID MT w
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1716.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (10)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: kyhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: kyhpgn.los
operation_version: NGS-Usa KY
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1718.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (11)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: lahpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: lahpgn.los
operation_version: NGS-Usa LA
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1719.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (12)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mdhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mdhpgn.los
operation_version: NGS-Usa DE MD
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1720.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (13)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mehpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mehpgn.los
operation_version: NGS-Usa ME
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1721.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (14)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mihpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mihpgn.los
operation_version: NGS-Usa MI
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1722.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (15)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mshpgn.los
operation_version: NGS-Usa MS
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1723.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (16)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nbhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nbhpgn.los
operation_version: NGS-Usa NE
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1724.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (17)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nehpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nehpgn.los
operation_version: NGS-Usa NewEng
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1725.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (18)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nmhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nmhpgn.los
operation_version: NGS-Usa NM
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1726.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (19)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nyhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nyhpgn.los
operation_version: NGS-Usa NY
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1727.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (20)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: ndhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: ndhpgn.los
operation_version: NGS-Usa ND
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1729.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (21)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: okhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: okhpgn.los
operation_version: NGS-Usa OK
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1730.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (22)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: pvhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: pvhpgn.los
operation_version: NGS-PRVI
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1731.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (23)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: sdhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: sdhpgn.los
operation_version: NGS-Usa SD
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1732.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (24)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: tnhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: tnhpgn.los
operation_version: NGS-Usa TN
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1733.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (25)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: ethpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: ethpgn.los
operation_version: NGS-Usa TX e
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1734.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (26)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wthpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wthpgn.los
operation_version: NGS-Usa TX w
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1735.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (27)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: vahpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: vahpgn.los
operation_version: NGS-Usa VA
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1736.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (28)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wohpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wohpgn.los
operation_version: NGS-Usa OR WA
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1737.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (29)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wihpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wihpgn.los
operation_version: NGS-Usa WI
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1738.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (30)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wyhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wyhpgn.los
operation_version: NGS-Usa WY
description:
Accuracy 67% confidence level. Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1740.


auth_name: EPSG
name: AGD66 to GDA94 (6)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: tas_1098.gsb
operation_version: OSG-Tas 0.1m
description:
Replaced by AGD66 to GDA94 (11) (code 1803). Input expects longitudes to be positive west; EPSG GeogCRS AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (31)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: hihpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: hihpgn.los
operation_version: NGS-Usa HI
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1741.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (32)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: inhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: inhpgn.los
operation_version: NGS-Usa IN
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1742.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (33)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: kshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: kshpgn.los
operation_version: NGS-Usa KS
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1743.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (34)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nvhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nvhpgn.los
operation_version: NGS-Usa NV
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1744.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (35)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: ohhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: ohhpgn.los
operation_version: NGS-Usa OH
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1745.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (36)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: uthpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: uthpgn.los
operation_version: NGS-Usa UT
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1746.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (37)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wvhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wvhpgn.los
operation_version: NGS-Usa WV
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1747.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (38)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: ilhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: ilhpgn.los
operation_version: NGS-Usa IL
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1748.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (39)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: njhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: njhpgn.los
operation_version: NGS-Usa NJ
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1749.


auth_name: EPSG
name: AGD84 to GDA94 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: wa_0400.gsb
operation_version: DOLA-Aus WA 0.1m old
description:
Withdrawn and replaced by AGD84 to GDA94 (4) (code 1593) due to binary file format error. Input expects longitudes to be positive west; EPSG GeogCRS AGD84 (code 4203) and GDA94 (code 4283) have longitudes positive east.


auth_name: EPSG
name: NZGD49 to NZGD2000 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: nzgd2kgrid0005.gsb
operation_version: OSG-Nzl 1m
description:
These same parameter values may be used to transform to WGS 84 - see NZGD49 to WGS 84 (4) (code 1670).


auth_name: EPSG
name: NAD83 to NAD83(CSRS98) (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NAD83-98.gsb
operation_version: SGQ-Can QC
description:
Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(CSRS98) (code 4140) have longitudes positive east. Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1696.


auth_name: EPSG
name: NAD27 to NAD83 (6)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NA27NA83.GSB
operation_version: SGQ-Can QC NT2
description:
Also distributed with file name QUE27-83.gsb. Replaces NAD27 to NAD83 (5) (code 1462). Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27 (code 4267) and NAD83 (code 4269) have longitudes positive east.


auth_name: EPSG
name: NAD27 to NAD83(CSRS98) (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: QUE27-98.gsb
operation_version: SGQ-Can QC
description:
Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27 (code 4267) and NAD83(CSRS98) (code 4140) have longitudes positive east. Can be taken as an approximate transformation NAD27 to WGS 84 - see code 1692.


auth_name: EPSG
name: NAD27(CGQ77) to NAD83 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CQ77NA83.GSB
operation_version: SGQ-Can QC NT2
description:
Replaces NAD27(CGQ77) to NAD83 (1) (code 1451). Can be taken as approx transformation to WGS 84 - see code 1691.


auth_name: EPSG
name: NAD27(CGQ77) to NAD83(CSRS98) (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CGQ77-98.gsb
operation_version: SGQ-Can QC
description:
Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27(CGQ77) (code 4609) and NAD83(CSRS98) (code 4140) have 1691longitudes positive east. Can be taken as an approximate transformation NAD27(CGQ77) to WGS 84 - see code 1691.


auth_name: EPSG
name: American Samoa 1962 to NAD83(HARN) (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wshpgn.los
operation_version: NGS-Asm W
description:
NADCON method which expects longitudes positive west; EPSG GeogCRSs American Samoa 1962 and NAD83(HARN) (codes 4169 and 4152) have longitudes positive east. NADCON expects latitudes in northern hemisphere and values must be made positive prior to input.


auth_name: EPSG
name: AGD84 to GDA94 (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: wa_0700.gsb
operation_version: DOLA-Aus WA 0.1m
description:
Replaces AGD84 to GDA94 (3) (code 1559) and then replaced by AGD84 to GDA94 (5) (code 1804). Input expects longitudes to be positive west; EPSG GeogCRS AGD84 (code 4203) and GDA94 (code 4283) both have longitudes positive east.


auth_name: EPSG
name: AGD66 to GDA94 (10)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: SEAust_21_06_00.gsb
operation_version: OSG-Aus SE 0.1m
description:
Replaces AGD66 to GDA94 (5) (code 1464). Replaced by AGD66 to GDA94 (11) (code 1803). Input expects longitudes to be positive west; EPSG GeogCRS AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.


auth_name: EPSG
name: NAD83 to NAD83(CSRS98) (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: AB_CSRS.DAC
operation_version: AB Env-Can AB
description:
This gridded difference file AB_CSRS.DAC will need to be renamed to AB_CSRS.gsb to run in some software suites. Formats identical, but AB file is provincial fit only.


auth_name: EPSG
name: NZGD49 to WGS 84 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: nzgd2kgrid0005.gsb
operation_version: EPSG-Nzl 1m
description:
Parameter file is from NZGD49 to NZGD2000 (3) (code 1568) and assumes WGS 84 is coincident with NZGD2000 to the accuracy of the transformation.


auth_name: EPSG
name: ATS77 to WGS 84 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NB7783v2.gsb
operation_version: EPSG-Can NB
description:
Parameter file is from ATS77 to NAD83(CSRS)v2 (1) (code 9237) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: ATS77 to WGS 84 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: PE7783V2.gsb
operation_version: EPSG-Can PEI
description:
Parameter file is from ATS77 to NAD83(CSRS)v2 (2) (code 9236) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD27(76) to WGS 84 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: May76v20.gsb
operation_version: EPSG-Can On
description:
Parameter file is from NAD27(76) to NAD83 (1) (code 1463) assuming that NAD83 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD27(CGQ77) to WGS 84 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CQ77NA83.GSB
operation_version: EPSG-Can Qc NT2
description:
Parameter file is from NAD27(CGQ77) to NAD83 (2) (code 1575) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD27 to WGS 84 (34)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NA27SCRS.GSB
operation_version: EPSG-Can QC
description:
Parameter file is from NAD27 to NAD83(CSRS)v2 (1) (code 9239) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation. Also distributed as QUE27-98.gsb.


auth_name: EPSG
name: NAD27 to WGS 84 (33)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NTv2_0.gsb
operation_version: EPSG-Can
description:
Parameter file is from NAD27 to NAD83 (4) (code 1313) assuming that NAD83 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: American Samoa 1962 to WGS 84 (2)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wshpgn.los
operation_version: EPSG-Asm W
description:
Parameter files are from American Samoa 1962 to NAD83(HARN) (1) (code 1578), but for many purposes NAD83(HARN) can be considered to be coincident with WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: American Samoa 1962 to WGS 84 (3)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: eshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: eshpgn.los
operation_version: EPSG-Asm E
description:
Parameter files are from American Samoa 1962 to NAD83(HARN) (2) (code 1579), but for many purposes NAD83(HARN) can be considered to be coincident with WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (6)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NA83SCRS.GSB
operation_version: EPSG-Can QC
description:
Parameter file is from NAD83 to NAD83(CSRS)v2 (1) (code 9241) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation. Also distributed with file name NAD83-98.gsb.


auth_name: EPSG
name: NAD83 to WGS 84 (7)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: SK83-98.gsb
operation_version: EPSG-Can SK
description:
Parameter file is from NAD83 to NAD83(CSRS)v2 (2) (code 9887) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: St. George Island to WGS 84 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: stgeorge.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: stgeorge.los
operation_version: EPSG-Usa AK StG
description:
Parameter files are from St. George Island to NAD83 (1) (code 1457) assuming that NAD83 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: St. Lawrence Island to WGS 84 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: stlrnc.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: stlrnc.los
operation_version: EPSG-Usa AK StL
description:
Parameter files are from St. Lawrence Island to NAD83 (1) (code 1455) assuming that NAD83 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: St. Paul Island to WGS 84 (1)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: stpaul.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: stpaul.los
operation_version: EPSG-Usa AK StP
description:
Parameter files are from St. Paul Island to NAD83 (1) (code 1456) assuming that NAD83 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (8)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: AB_CSRS.DAC
operation_version: EPSG-Can AB
description:
Parameter file is from NAD83 to NAD83(CSRS)v4 (3) (code 9244) assuming that NAD83(CSRS)v4 is equivalent to WGS 84 within the accuracy of the transformation. This file AB_CSRS.DAC will need to be renamed to AB_CSRS.gsb to run in some software.


auth_name: EPSG
name: NAD27 to WGS 84 (32)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: SK27-98.gsb
operation_version: EPSG-Can SK
description:
Parameter file is from NAD27 to NAD83(CSRS)v2 (2) (code 9886) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (40)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: arhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: arhpgn.los
operation_version: NGS-Usa AR
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1708.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (41)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: iahpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: iahpgn.los
operation_version: NGS-Usa IA
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1709.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (42)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mnhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mnhpgn.los
operation_version: NGS-Usa MN
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1710.


auth_name: EPSG
name: NAD83 to NAD83(HARN) (43)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mohpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mohpgn.los
operation_version: NGS-Usa MO
description:
Uses NADCON method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(HARN) (code 4152) have longitudes positive east. May be taken as approximate transformation NAD83-WGS 84 - see code 1711.


auth_name: EPSG
name: NAD83 to WGS 84 (12)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: arhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: arhpgn.los
operation_version: EPSG-USA Ar
description:
Parameter files are from NAD83 to NAD83(HARN) (40) (code 1704) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (13)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: iahpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: iahpgn.los
operation_version: EPSG-Usa IA
description:
Parameter files are from NAD83 to NAD83(HARN) (41) (code 1705) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (14)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mnhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mnhpgn.los
operation_version: EPSG-Usa MN
description:
Parameter files are from NAD83 to NAD83(HARN) (42) (code 1706) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (15)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mohpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mohpgn.los
operation_version: EPSG-Usa MO
description:
Parameter files are from NAD83 to NAD83(HARN) (43) (code 1707) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (16)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: cohpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: cohpgn.los
operation_version: EPSG-Usa CO
description:
Parameter files are from NAD83 to NAD83(HARN) (5) (code 1478) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (17)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: gahpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: gahpgn.los
operation_version: EPSG-Usa GA
description:
Parameter files are from NAD83 to NAD83(HARN) (6) (code 1479) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (18)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: flhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: flhpgn.los
operation_version: EPSG-Usa FL
description:
Parameter files are from NAD83 to NAD83(HARN) (7) (code 1480) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (19)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: emhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: emhpgn.los
operation_version: EPSG-Usa ID MT e
description:
Parameter files are from NAD83 to NAD83(HARN) (8) (code 1481) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (20)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wmhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wmhpgn.los
operation_version: EPSG-Usa ID MT w
description:
Parameter files are from NAD83 to NAD83(HARN) (9) (code 1482) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (21)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: alhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: alhpgn.los
operation_version: EPSG-Usa AL
description:
Parameter files are from NAD83 to NAD83(HARN) (1) (code 1474) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (22)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: kyhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: kyhpgn.los
operation_version: EPSG-Usa KY
description:
Parameter files are from NAD83 to NAD83(HARN) (10) (code 1483) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (23)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: lahpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: lahpgn.los
operation_version: EPSG-Usa LA
description:
Parameter files are from NAD83 to NAD83(HARN) (11) (code 1484) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (24)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mdhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mdhpgn.los
operation_version: EPSG-Usa DE MD
description:
Parameter files are from NAD83 to NAD83(HARN) (12) (code 1485) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (25)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mehpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mehpgn.los
operation_version: EPSG-Usa ME
description:
Parameter files are from NAD83 to NAD83(HARN) (13) (code 1486) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (26)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mihpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mihpgn.los
operation_version: EPSG-Usa MI
description:
Parameter files are from NAD83 to NAD83(HARN) (14) (code 1487) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (27)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: mshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: mshpgn.los
operation_version: EPSG-Usa MS
description:
Parameter files are from NAD83 to NAD83(HARN) (15) (code 1488) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (28)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nbhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nbhpgn.los
operation_version: EPSG-Usa NE
description:
Parameter files are from NAD83 to NAD83(HARN) (16) (code 1489) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (29)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nehpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nehpgn.los
operation_version: EPSG-Usa NewEng
description:
Parameter files are from NAD83 to NAD83(HARN) (17) (code 1490) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (30)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nmhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nmhpgn.los
operation_version: EPSG-Usa NM
description:
Parameter files are from NAD83 to NAD83(HARN) (18) (code 1491) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (31)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nyhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nyhpgn.los
operation_version: EPSG-Usa NY
description:
Parameter files are from NAD83 to NAD83(HARN) (19) (code 1492) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (32)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: azhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: azhpgn.los
operation_version: EPSG-Usa AZ
description:
Parameter files are from NAD83 to NAD83(HARN) (2) (code 1475) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (33)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: ndhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: ndhpgn.los
operation_version: EPSG-Usa ND
description:
Parameter files are from NAD83 to NAD83(HARN) (20) (code 1493) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (34)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: okhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: okhpgn.los
operation_version: EPSG-Usa OK
description:
Parameter files are from NAD83 to NAD83(HARN) (21) (code 1494) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (35)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: pvhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: pvhpgn.los
operation_version: EPSG-PRVI
description:
Parameter files are from NAD83 to NAD83(HARN) (22) (code 1495) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (36)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: sdhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: sdhpgn.los
operation_version: EPSG-Usa SD
description:
Parameter files are from NAD83 to NAD83(HARN) (23) (code 1496) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (37)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: tnhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: tnhpgn.los
operation_version: EPSG-Usa TN
description:
Parameter files are from NAD83 to NAD83(HARN) (24) (code 1497) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (38)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: ethpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: ethpgn.los
operation_version: EPSG-Usa TX e
description:
Parameter files are from NAD83 to NAD83(HARN) (25) (code 1498) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (39)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wthpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wthpgn.los
operation_version: EPSG-Usa TX w
description:
Parameter files are from NAD83 to NAD83(HARN) (26) (code 1499) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (40)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: vahpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: vahpgn.los
operation_version: EPSG-Usa VA
description:
Parameter files are from NAD83 to NAD83(HARN) (27) (code 1500) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (41)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wohpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wohpgn.los
operation_version: EPSG-Usa OR WA
description:
Parameter files are from NAD83 to NAD83(HARN) (28) (code 1501) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (42)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wihpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wihpgn.los
operation_version: EPSG-Usa WI
description:
Parameter files are from NAD83 to NAD83(HARN) (29) (code 1502) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (43)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: cnhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: cnhpgn.los
operation_version: EPSG-Usa CA n
description:
Parameter files are from NAD83 to NAD83(HARN) (3) (code 1476) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (44)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wyhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wyhpgn.los
operation_version: EPSG-Usa WY
description:
Parameter files are from NAD83 to NAD83(HARN) (30) (code 1503) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (45)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: hihpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: hihpgn.los
operation_version: EPSG-Usa HI
description:
Parameter files are from NAD83 to NAD83(HARN) (31) (code 1520) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (46)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: inhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: inhpgn.los
operation_version: EPSG-Usa IN
description:
Parameter files are from NAD83 to NAD83(HARN) (32) (code 1521) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (47)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: kshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: kshpgn.los
operation_version: EPSG-Usa KS
description:
Parameter files are from NAD83 to NAD83(HARN) (33) (code 1522) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (48)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nvhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nvhpgn.los
operation_version: EPSG-Usa NV
description:
Parameter files are from NAD83 to NAD83(HARN) (34) (code 1523) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (49)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: ohhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: ohhpgn.los
operation_version: EPSG-Usa OH
description:
Parameter files are from NAD83 to NAD83(HARN) (35) (code 1524) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (50)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: uthpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: uthpgn.los
operation_version: EPSG-Usa UT
description:
Parameter files are from NAD83 to NAD83(HARN) (36) (code 1525) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (51)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: wvhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: wvhpgn.los
operation_version: EPSG-Usa WV
description:
Parameter files are from NAD83 to NAD83(HARN) (37) (code 1526) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (52)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: ilhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: ilhpgn.los
operation_version: EPSG-Usa IL
description:
Parameter files are from NAD83 to NAD83(HARN) (38) (code 1553) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (53)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: njhpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: njhpgn.los
operation_version: EPSG-Usa NJ
description:
Parameter files are from NAD83 to NAD83(HARN) (39) (code 1554) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to WGS 84 (54)
method_auth_name: EPSG
method_name: NADCON
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: cshpgn.las
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: cshpgn.los
operation_version: EPSG-Usa CA s
description:
Parameter files are from NAD83 to NAD83(HARN) (4) (code 1477) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: NAD83 to NAD83(CSRS98) (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: AB_CSRS.DAC
operation_version: AB Env-Can AB
description:
This gridded difference file AB_CSRS.DAC will need to be renamed to AB_CSRS.gsb to run in some software suites. Formats identical, but AB file is provincial fit only. Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1702.


auth_name: EPSG
name: AGD66 to GDA94 (11)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: A66 National (13.09.01).gsb
operation_version: ICSM-Aus 0.1m
description:
Replaces AGD66 to GDA94 variants 6, 7 and 10 (codes 1506 1507 1596). Input expects longitudes to be positive west; source and target CRSs AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.


auth_name: EPSG
name: AGD84 to GDA94 (5)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: National 84 (02.07.01).gsb
operation_version: Auslig-Aus 0.1m
description:
Replaces AGD84 to GDA94 (4) (code 1593) which itself replaced variant 3 (code 1559). Input expects longitudes to be + west; EPSG GeogCRS AGD84 (code 4203) and GDA94 (code 4283) both have longitudes positive east. May be used as tfm to WGS 84 - see 15785


auth_name: EPSG
name: NAD83 to NAD83(CSRS) (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NAD83-98.gsb
operation_version: SGQ-Can QC
description:
Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(CSRS) (code 4617) have longitudes positive east. Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1696.


auth_name: EPSG
name: NAD27 to NAD83(CSRS) (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: QUE27-98.gsb
operation_version: SGQ-Can QC
description:
Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27 (code 4267) and NAD83(CSRS) (code 4617) have longitudes positive east. Can be taken as an approximate transformation NAD27 to WGS 84 - see code 1692.


auth_name: EPSG
name: NAD27(CGQ77) to NAD83(CSRS) (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CGQ77-98.gsb
operation_version: SGQ-Can QC
description:
Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27(CGQ77) (code 4609) and NAD83(CSRS) (code 4617) have longitudes positive east. Can be taken as an approximate transformation NAD27(CGQ77) to WGS 84 - see code 1691.


auth_name: EPSG
name: ATS77 to WGS 84 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NS778301.gsb
operation_version: EPSG-Can NS
description:
Parameter file is from ATS77 to NAD83(CSRS)v3 (3) (code 9235) assuming that NAD83(CSRS)v3 is equivalent to WGS 84 within the accuracy of the transformation.


auth_name: EPSG
name: WGS 84 to EGM2008 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Und_min2.5x2.5_egm2008_isw=82_WGS84_TideFree
operation_version: NGA-World 2.5min
description:
Replaces WGS 84 to EGM96 height (1) (CT code 10084). Grid spacing is 2.5 arc-minutes. For a file with smaller (1 arc-minute) grid spacing (in principle more exactly representing the spherical harmonics) see CT code 3859. For reversible alternative see CT code 9704. An executable using spherical harmonics is available from the NGA site.


auth_name: EPSG
name: WGS 84 to EGM2008 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Und_min1x1_egm2008_isw=82_WGS84_TideFree
operation_version: NGA-World 1min
description:
Grid spacing is 1 arc-minute. For a larger grid spacing (in principle less exactly matching the spherical harmonics) see CT code 3858. For reversible alternative see CT code 9618.  An executable using spherical harmonics is available from the NGS site.


auth_name: EPSG
name: RRAF 1991 to Martinique 1987 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggm00.txt
operation_version: IGN Mtq
description:
May be used for transformations from WGS 84 to IGN 1987. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RRAF 1991 to Guadeloupe 1988 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggg00.txt
operation_version: IGN Glp GT
description:
May be used for transformations from WGS 84 to IGN 1988. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RRAF 1991 to IGN 1988 MG height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggg00_mg.txt
operation_version: IGN Glp MG
description:
May be used for transformations from WGS 84 to IGN 1988 MG. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RRAF 1991 to IGN 1988 SM height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggg00_sm.txt
operation_version: IGN Glp StM
description:
May be used for transformations from WGS 84 to IGN 1988 SM. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RRAF 1991 to IGN 1988 LS height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggg00_ls.txt
operation_version: IGN Glp LSt
description:
May be used for transformations from WGS 84 to IGN 1988 LS. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RRAF 1991 to IGN 1988 SB height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggg00_sb.txt
operation_version: IGN Glp StB
description:
May be used for transformations from WGS 84 to IGN 1988 SB. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: ETRS89 to Belfast height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM02-Ire)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSGM02_NI.txt
operation_version: OS-UK NI
description:
May be used for transformations from WGS 84 to Belfast. Replaced by ETRS89 to Belfast height (2) (code 7958).


auth_name: EPSG
name: ETRS89 to Malin Head height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM02-Ire)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSGM02_RoI.txt
operation_version: OS-Ire
description:
May be used for transformations from WGS 84 to Malin Head. Replaced by ETRS89 to Malin Head height (2) (code 7959).


auth_name: EPSG
name: OSGB36 to ETRS89 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: OSTN02_NTv2.gsb
operation_version: OSGB-UK Gbr02 NT
description:
Approximate alternative to official OSTN02 method (tfm code 7952). Accuracy at 2000 test points compared to OSTN02 (tfm code 1039): latitude 0.5mm av, 17mm max; longitude 0.8mm av, 23mm max. May be taken as approximate CT to WGS 84 - see code 5339.


auth_name: EPSG
name: OSGB36 to WGS 84 (7)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: OSTN02_NTv2.gsb
operation_version: OGP-UK Gbr02 NT
description:
Parameter values taken from OSGB36 to ETRS89 (1) (tfm code 5338) assuming that ETRS89 is coincident with WGS 84 within the accuracy of the tfm.


auth_name: EPSG
name: NGVD29 height to NAVD88 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (VERTCON)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: vertconw.94
operation_version: NGS-US Conus W
description:
Interpolation within the gridded data file may be made using any of the horizontal CRSs NAD27, NAD83 or NAD83(HARN).


auth_name: EPSG
name: RGAF09 to Martinique 1987 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_mart.txt
operation_version: IGN Mtq
description:
Replaces tfm from RRAF 1991, code 4561. May be used for transformations from WGS 84 to IGN 1987. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RGAF09 to Guadeloupe 1988 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_gtbt.txt
operation_version: IGN Glp GT
description:
Replaces tfm from RRAF 1991, code 4562. May be used for transformations from WGS 84 to IGN 1988. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RGAF09 to IGN 1988 MG height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_mg.txt
operation_version: IGN Glp MG
description:
Replaces tfm from RRAF 1991, code 4563. May be used for transformations from WGS 84 to IGN 1988 MG. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RGAF09 to IGN 1988 SM height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_sm.txt
operation_version: IGN Glp StM
description:
Replaces tfm from RRAF 1991, code 4564. May be used for transformations from WGS 84 to IGN 1988 SM. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RGAF09 to IGN 1988 LS height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_ls.txt
operation_version: IGN Glp LSt
description:
Replaces tfm from RRAF 1991, code 4565. May be used for transformations from WGS 84 to IGN 1988 LS. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RGAF09 to IGN 1992 LD height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_ld.txt
operation_version: IGN Glp Des
description:
Replaces tfm from RRAF 1991, code 4566. Replaced by RGAF09 to IGN 2008 LD height (1), CT code 9131. May be used for transformations from WGS 84 to IGN 1992 LD. Accuracy at each 0.025° grid node is given within the geoid model file, approx. average 0.5m.


auth_name: EPSG
name: RGAF09 to IGN 1988 SB height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_sb.txt
operation_version: IGN Glp StB
description:
Replaces tfm from RRAF 1991, code 4567. May be used for transformations from WGS 84 to IGN 1988 SB. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file.


auth_name: EPSG
name: SAD69 to SIRGAS 2000 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: SAD69_003.gsb
operation_version: IBGE-Bra 1m 1996
description:
For IBGE, in onshore east and south Brazil only, replaces SAD69 to SIRGAS 2000 (1) (tfm code 15485) for pre-1996 data based on the classical geodetic network. May be used as transformation between SAD69 and WGS 84 - see tfm code 5542.


auth_name: EPSG
name: Corrego Alegre 1961 to WGS 84 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CA61_003.gsb
operation_version: OGP-Bra
description:
Parameters from Corrego Alegre 1961 to SIRGAS 2000 (1) (tfm code 5525) assuming that SIRGAS 2000 and WGS 84 are equal within the accuracy of the transformation.


auth_name: EPSG
name: Corrego Alegre 1970-72 to WGS 84 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CA7072_003.gsb
operation_version: OGP-Bra
description:
Parameters from Corrego Alegre 1970-72 to SIRGAS 2000 (1) (tfm code 5526) assuming that SIRGAS 2000 and WGS 84 are equal within the accuracy of the transformation.


auth_name: EPSG
name: SAD69 to WGS 84 (15)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: SAD69_003.gsb
operation_version: OGP-Bra 2m 1996
description:
Parameters values taken from SAD69 to SIRGAS 2000 (2) (tfm code 5528) assuming that SIRGAS 2000 and WGS 84 are equal within the accuracy of the transformation.


auth_name: EPSG
name: SAD69(96) to WGS 84 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: SAD96_003.gsb
operation_version: OGP-Bra 1m 1996
description:
Parameters values taken from SAD69(96) to SIRGAS 2000 (1) (tfm code 5529) assuming that SIRGAS 2000 and WGS 84 are equal within the accuracy of the transformation.


auth_name: EPSG
name: FEH2010 to FCSVR10 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: fehmarn_geoid10.gri
operation_version: FEM-Dnk-Deu Feh
description:
For reversible alternative to this transformation see FEH2010 to FEH2010 + FCSVR10 height (1) (code 9619).


auth_name: EPSG
name: GDA94 to AHD height (49)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (AUSGeoid v2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AUSGeoid09_V1.01.gsb
operation_version: GA-Aus09 mainland
description:
File name previously called AUSGeoid09_GDA94_V1.01_DOV_windows.gsb. Replaces AUSGeoid98 model. Uses AUSGeoid09 model which uses bi-cubic interpolation; bi-linear interpolation of the grid file will give results agreeing to within 1cm 99.97% of the time.


auth_name: EPSG
name: GDA94 to AHD (Tasmania) height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (AUSGeoid v2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AUSGeoid09_GDA94_V1.01_DOV_windows.gsb
operation_version: GA-Aus09 Tas
description:
Replaces AusGeoid98 model. Uses AusGeoid09 model which uses bi-cubic interpolation; bi-linear interpolation of the grid file will give results agreeing to within 1cm 99.97% of the time. May be used for transformations from WGS 84 to AHD (Tasmania).


auth_name: EPSG
name: ED50 to ETRS89 (14)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: 100800401.gsb
operation_version: ICC-Esp Cat
description:
When included in concatenation from and to projected CRSs, gives same results as ED50 / UTM zone 31N to ETRS89 / UTM zone 31N (1) - see CRS code 5166.


auth_name: EPSG
name: MGI to ETRS89 (5)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: AT_GIS_GRID.gsb
operation_version: BEV-Aut NTv2
description:
Not to be used for cadastral purposes because it does not comply with the rules for control network tie-in as per Paragraph 3 of the Land Survey Regulations (Vermessungsverordnung) 2010. Replaced by GIS-Grid 2021 (MGI to ETRS89 (8), code 9910).


auth_name: EPSG
name: CIGD11 to GCVD54 height (ft) (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (CI)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GCGM0811.TXT
operation_version: LSD-Cym
description:
Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet. For reversible alternative to this transformation see CIGD11 to CIGD11 + GCVD54 height (ft)) (code 9603).


auth_name: EPSG
name: CIGD11 to LCVD61 height (ft) (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (CI)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: LCGM0811.TXT
operation_version: LSD-Cym
description:
Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet. For reversible alternative to this transformation see CIGD11 to CIGD11 + LCVD61 height (ft) (1) (code 9604).


auth_name: EPSG
name: CIGD11 to CBVD61 height (ft) (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (CI)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CBGM0811.TXT
operation_version: LSD-Cym
description:
Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet. For reversible alternative to this transformation see CIGD11 to CIGD11 + CBVD61 height (ft) (1) (code 9602).


auth_name: EPSG
name: Lisbon to ETRS89 (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: DLx_ETRS89_geo.gsb
operation_version: IGP-Prt 0.1m
description:
Derived from 1129 common stations in the national geodetic network. Residuals at 130 further test points average 0.09m, maximum 0.30m.


auth_name: EPSG
name: Datum 73 to ETRS89 (6)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: D73_ETRS89_geo.gsb
operation_version: IGP-Prt 0.1m
description:
Derived from 1129 common stations in the national geodetic network. Residuals at 130 further test points average 0.06m, maximum 0.16m.


auth_name: EPSG
name: NAD27 to NAD83(CSRS) (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NB2783v2.gsb
operation_version: SNB-Can NB
description:
Introduced in 2011. Precision of 20 cm in area covered by the input data set and 40 cm anywhere else, with the exception of the northwest area of the province (near the border with Quebec) where the precision deteriorates to 80 cm.


auth_name: EPSG
name: NAD83(2011) to NAVD88 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2012bu0.bin
operation_version: NGS-US Conus
description:
Uses Geoid12B hybrid model. Renamed from Geoid12A but with no data changes. See information source for further information.


auth_name: EPSG
name: NAD83(2011) to NAVD88 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2012ba0.bin
operation_version: NGS-US AK
description:
Uses Geoid12B hybrid model. Renamed from Geoid12A but with no data changes. See information source for further information. For reversible alternative to this transformation see NAD83(2011) to NAD83(2011) + NAVD88 height (2) (code 9596).


auth_name: EPSG
name: NAD83(CSRS) to CGVD2013 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CGG2013n83.byn
operation_version: NRC Can CGG2013
description:
Uses CGG2013 model which uses bi-quadratic interpolation; bi-linear interpolation of the grid file will give results agreeing to within 1cm 99.97% of the time.


auth_name: EPSG
name: Tokyo to JGD2000 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: tky2jgd.gsb
operation_version: OGP-Jpn
description:
NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. After Tohoku earthquake of 2011 accuracy in northern Honshu reduced to 1-5m and in this area replaced by Tokyo to JGD2011 (tfm code 6714).


auth_name: EPSG
name: Tokyo to JGD2011 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: tky2jgd.gsb
operation_version: OGP-Jpn ex N Honshu
description:
Parameter values from Tokyo to JGD2000 (2) (tfm code 6712) as in area of applicability JGD2011 = JGD2000. NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. See Tokyo to JGD2011 (1) (tfm code 6714) for northern Honshu area.


auth_name: EPSG
name: TM75 to ETRS89 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: tm75_etrs89.gsb
operation_version: OSI-Ire NT approximation
description:
Approximate alternative to official OS polynomial method (tfm code 1041). May be taken as approximate transformation TM75 to WGS 84 - see code 6947.


auth_name: EPSG
name: TM75 to WGS 84 (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: tm75_etrs89.gsb
operation_version: OGP-Ire NT approx
description:
Parameter values taken from TM75 to ETRS89 (3) (tfm code 6946) assuming that ETRS89 is coincident with WGS 84 within the accuracy of the tfm. Within accuracy of the tfm equivalent to TM75 to WGS 84 (1) (tfm code 1042).


auth_name: EPSG
name: RD/83 to ETRS89 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NTv2_SN.gsb
operation_version: GeoSN-Deu SN
description:
Recommended by Saxony State Spatial Data and Land Survey Corporation for transformations based on official geospatial data of Saxony. Accuracy 3mm within Saxony; within the rest of RD/83 definition area results at least coincide with EPSG CT code15868.


auth_name: EPSG
name: Amersfoort to ETRS89 (7)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: rdtrans2008.gsb
operation_version: RDNAP-Nld 2008
description:
Consistent to within 1mm with official RNAPTRANS(TM)2008 at ground level onshore and at MSL offshore. The horizontal deviation using this NTv2 grid is approximately 1mm per 50m height difference from ground level or MSL.


auth_name: EPSG
name: ETRS89 to NAP height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: naptrans2008.gtx
interpolation_crs_auth_name: EPSG
operation_version: RDNAP-Nld 2008
description:
Alternative to vertical component of official 3D RDNAPTRANS(TM)2008. The naptrans2008 correction grid incorporates the NLGEO2004 geoid model plus a fixed offset.


auth_name: EPSG
name: NAD83(MA11) to GUVD04 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2012bg0.bin
operation_version: NGS-Gum 12B
description:
Uses Geoid12B hybrid model. See information source for further information. For reversible alternative to this transformation see NAD83(MA11) to NAD83(MA11) + GUVD04 height (1) (code 9624).


auth_name: EPSG
name: NAD83(MA11) to NMVD03 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2012bg0.bin
operation_version: NGS-Mnp 12B
description:
Uses Geoid12B hybrid model. See information source for further information. For reversible alternative to this transformation see NAD83(MA11) to NAD83(MA11) + NMVD03 height (1) (code 9625).


auth_name: EPSG
name: NAD83(PA11) to ASVD02 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2012bs0.bin
operation_version: NGS-Asm 12B
description:
Uses Geoid12B hybrid model. See information source for further information. For reversible alternative to this transformation see NAD83(PA11) to NAD83(PA11) + ASVD02 height (1) (code 9626).


auth_name: EPSG
name: CH1903 to CHTRS95 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CHENyx06_ETRS.gsb
operation_version: BfL-Che NTv2
description:
Equivalent to concatenation of transformations 15486 (CH1903 to CH1903+) and 1509 (CH1903+ to CHTRS95) to within 2cm. Also used as transformation between CH1903 and ETRS89 (see code 7674).


auth_name: EPSG
name: CH1903 to ETRS89 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CHENyx06_ETRS.gsb
operation_version: BfL-Che NTv2
description:
Equivalent to concatenation of CTs 15486 (CH1903 to CH1903+) and 1647 (CH1903+ to CHTRS95) to within 2cm. Also used as CT between CH1903 and CHTRS95 (see code 7673). Replaces CT code 1646. May be used as approximate CT CH1903 to WGS 84 - see code 7788.


auth_name: EPSG
name: OSGB36 to ETRS89 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: OSTN15_NTv2_OSGBtoETRS.gsb
operation_version: OSGB-UK Gbr15 NT
description:
Approximate alternative to official OSTN15 method (tfm code 7953). May be taken as approximate transformation OSGB36 to WGS 84 - see code 7710. Replaces OSGB36 to ETRS89 (1) (tfm code 5338).


auth_name: EPSG
name: OSGB36 to WGS 84 (9)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: OSTN15_NTv2_OSGBtoETRS.gsb
operation_version: OGP-UK Gbr15 NT
description:
Parameter values taken from OSGB36 to ETRS89 (2) (tfm code 7709) assuming that ETRS89 is coincident with WGS 84 within the accuracy of the tfm. Replaces OSGB36 to WGS 84 (7) (tfm code 5339).


auth_name: EPSG
name: ETRS89 to ODN height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM-GB)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSTN15_OSGM15_GB.txt
operation_version: OS-UK Gbr 2015
description:
OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Newlyn height (1) (tfm code 10021). For reversible alternative to this transformation see ETRS89 to ETRS89 + ODN height (2) (code 9587).


auth_name: EPSG
name: ETRS89 to ODN Orkney height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM-GB)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSTN15_OSGM15_GB.txt
operation_version: OS-UK Ork 2015
description:
OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Newlyn (Orkney Isles) height (1) (tfm code 10029). For reversible alternative to this transformation see ETRS89 to ETRS89 + ODN Orkney height (2) (code 9586).


auth_name: EPSG
name: ETRS89 to ODN (Offshore) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM-GB)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSTN15_OSGM15_GB.txt
operation_version: OS-UK Off 2015
description:
Replaces ETRS89 to Fair Isle/Flannan Isles/Foula/North Rona/St Kilda/Sule Skerry height (1) (tfm codes 10024-26, 10030-31 and 10034). For reversible alternative to this transformation see ETRS89 to ETRS89 + ODN (Offshore) height (1) (code 9588).


auth_name: EPSG
name: ETRS89 to Lerwick height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM-GB)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSTN15_OSGM15_GB.txt
operation_version: OS -UK Shet 2015
description:
OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Lerwick height (1) (tfm code 10027). For reversible alternative to this transformation see ETRS89 to ETRS89 + Lerwick height (2) (code 9589).


auth_name: EPSG
name: ETRS89 to Stornoway height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM-GB)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSTN15_OSGM15_GB.txt
operation_version: OS-UK Heb 2015
description:
OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Stornaway height (1) (tfm code 10033). For reversible alternative to this transformation see ETRS89 to ETRS89 + Stornoway height (2) (code 9584).


auth_name: EPSG
name: ETRS89 to St. Marys height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM-GB)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSTN15_OSGM15_GB.txt
operation_version: OS-UK Scilly 2015
description:
OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to St Marys height (1) (tfm code 10032). For reversible alternative to this transformation see ETRS89 to ETRS89 + St. Marys height (2) (code 9585).


auth_name: EPSG
name: ETRS89 to Douglas height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM-GB)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSTN15_OSGM15_GB.txt
operation_version: OS-UK Man 2015
description:
OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Douglas height (1) (tfm code 10023). For reversible alternative to this transformation see ETRS89 to ETRS89 + Douglas height (2) (code 9590).


auth_name: EPSG
name: CH1903 to WGS 84 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CHENyx06_ETRS.gsb
operation_version: OGP-Che NTv2
description:
Parameter values from CH1903 to ETRS89 (2) (code 7674) assuming that ETRS89 is equivalent to WGS 84 within the accuracy of the transformation. Equivalent to concatenation of transformations 15486 and 1676.


auth_name: EPSG
name: NZVD2016 height to Auckland 1946 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: auckland-1946-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ AUCK
description:
Derived at 260 control points. Mean offset 0.292m, standard deviation 0.029m, maximum difference from mean 0.075m.


auth_name: EPSG
name: NZVD2016 height to Bluff 1955 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: bluff-1955-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ BLUF
description:
Derived at 71 control points. Mean offset 0.273m, standard deviation 0.034m, maximum difference from mean 0.079m.


auth_name: EPSG
name: NZVD2016 height to Dunedin 1958 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: dunedin-1958-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ DUNE
description:
Derived at 197 control points. Mean offset 0.326m, standard deviation 0.043m, maximum difference from mean 0.152m.


auth_name: EPSG
name: NZVD2016 height to Dunedin-Bluff 1960 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: dunedin-bluff-1960-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ DUBL
description:
Derived at 205 control points. Mean offset 0.254m, standard deviation 0.039m, maximum difference from mean 0.11m.


auth_name: EPSG
name: NZVD2016 height to Gisborne 1926 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: gisborne-1926-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ GISB
description:
Derived at 274 control points. Mean offset 0.343m, standard deviation 0.025m, maximum difference from mean 0.09m.


auth_name: EPSG
name: NZVD2016 height to Lyttelton 1937 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: lyttelton-1937-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ LYTT
description:
Derived at 923 control points. Mean offset 0.34m, standard deviation 0.041m, maximum difference from mean 0.149m.


auth_name: EPSG
name: NZVD2016 height to Moturiki 1953 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: moturiki-1953-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ MOTU
description:
Derived at 519 control points. Mean offset 0.309m, standard deviation 0.071m, maximum difference from mean 0.231m.


auth_name: EPSG
name: NZVD2016 height to Napier 1962 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: napier-1962-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ NAPI
description:
Derived at 207 control points. Mean offset 0.203m, standard deviation 0.034m, maximum difference from mean 0.096m.


auth_name: EPSG
name: NZVD2016 height to Nelson 1955 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: nelson-1955-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ NELS
description:
Derived at 256 control points. Mean offset 0.329m, standard deviation 0.039m, maximum difference from mean 0.114m.


auth_name: EPSG
name: NZVD2016 height to One Tree Point 1964 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: onetreepoint-1964-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ ONTP
description:
Derived at 137 control points. Mean offset 0.077m, standard deviation 0.042m, maximum difference from mean 0.107m.


auth_name: EPSG
name: NZVD2016 height to Stewart Island 1977 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: stewartisland-1977-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ STWT
description:
Derived at 4 control points. Mean offset 0.299m, standard deviation 0.025m, maximum difference from mean 0.039m.


auth_name: EPSG
name: NZVD2016 height to Taranaki 1970 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: taranaki-1970-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ TARA
description:
Derived at 125 control points. Mean offset 0.286m, standard deviation 0.026m, maximum difference from mean 0.07m.


auth_name: EPSG
name: NZVD2016 height to Wellington 1953 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NZLVD)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: wellington-1953-to-nzvd2016-conversion.csv
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ WGTN
description:
Derived at 137 control points. Mean offset 0.408m, standard deviation 0.054m, maximum difference from mean 0.112m.


auth_name: EPSG
name: SHGD2015 to SHVD2015 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Und_min2.5x2.5_egm2008_isw=82_WGS84_TideFree.gz
operation_version: ENRD-Shn Hel
description:
This transformation defines SHVD2015 heights. For reversible alternative to this transformation see SHGD2015 to SHGD2015 + SHVD2015 height (1) (code 10614).


auth_name: EPSG
name: Canada velocity grid v6
method_auth_name: EPSG
method_name: Point motion by grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: cvg60.cvb
operation_version: NRC-Can cvg6.0
description:
NOTE: Before being deprecated this record had a second parameter (code 1048, value 8251) which has been removed due to being non-compliant with the data model.


auth_name: EPSG
name: ETRS89 to Belfast height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM15-Ire)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSGM15_Belfast.gri
operation_version: OS-UK NI 2015
description:
OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Belfast height (1) (tfm code 5334). For reversible alternative to this transformation see ETRS89 to ETRS89 + Belfast height (2) (code 9592).


auth_name: EPSG
name: ETRS89 to Malin Head height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM15-Ire)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSGM15_Malin.gri
operation_version: OS-Ire 2015
description:
OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Malin Head height (1) (tfm code 5335). For reversible alternative to this transformation see ETRS89 to ETRS89 + Malin Head height (2) (code 9591).


auth_name: EPSG
name: NGVD29 height (m) to NAVD88 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (VERTCON)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: vertconw.94
operation_version: NGS-US Conus W
description:
In this area the NGVD29 vertical reference surface is approximately 0.6 to 1.6m below the NAVD88 datum surface. Interpolation within the gridded data file may be made using either NAD27 or any of the realizations of NAD83 applicable to US conus.


auth_name: EPSG
name: NGVD29 height (m) to NAVD88 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (VERTCON)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: vertconc.94
operation_version: NGS-US Conus C
description:
In the SE of this area the NGVD29 surface is 0 to 0.1m above the NAVD88 surface; in the W it is 0.6 to 0.9m below the NAVD88 surface. Interpolation in the data file may be made using either NAD27 or any of the NAD83 realizations applicable to US conus.


auth_name: EPSG
name: NGVD29 height (m) to NAVD88 height (3)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (VERTCON)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: vertcone.94
operation_version: NGS-US Conus E
description:
In this area the NGVD29 vertical reference surface is approximately 0 to 0.5m above the NAVD88 surface. Interpolation within the gridded data file may be made using either NAD27 or any of the realisations of NAD83 applicable to US conus.


auth_name: EPSG
name: WGS 84 to MSL height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz
operation_version: IOGP-World
description:
Parameter values are from WGS 84 to EGM2008 height (2) (CT code 3859) assuming that the EGM2008 surface equals MSL surface within the accuracy of the transformation. For reversible alternative see WGS 84 to WGS 84 + MSL height (1) (code 9706).


auth_name: EPSG
name: GR96 to GVR2000 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gr2000g.gri
operation_version: SDFE-Grl
description:
Defines GVR2000. File is also available in NOAA VDatum format (ggeoid2000.gtx) and GeoTIFF format (ggeoid2000.tif). For reversible alternative to this transformation see GR96 to GR96 + GVR2000 height (1) (code 9598).


auth_name: EPSG
name: GR96 to GVR2016 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggeoid16.gri
operation_version: SDFE-Grl
description:
Defines GVR2016. File is also available in NOAA VDatum format (ggeoid2016.gtx) and GeoTIFF format (ggeoid2016.tif). For reversible alternative to this transformation see GR96 to GR96 + GVR2016 height (1) (code 9599).


auth_name: EPSG
name: RGF93 to NGF IGN69 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAF09.mnt
operation_version: IGN Fra 09
description:
Replaces RGF93 to NGF IGN69 height (1) (code 10000). Accuracy at each 0.1 deg x 0.1 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RGF93 to IGN78 Corsica height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAC09.mnt
operation_version: IGN Fra Cor 09
description:
Replaces RGF93 to NGF IGN69 height (1) (code 10002). Accuracy at each 0.1 deg x 0.1 degree grid node is given within the geoid model file.


auth_name: EPSG
name: ETRS89 to ETRS89 + Baltic 1957 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Slovakia_ETRS89h_to_Baltic1957.gtx
interpolation_crs_auth_name: EPSG
operation_version: UGKK-Svk
description:
Uses ETRS89 (realization ETRF2000) and quasigeoid model DVRM05. 1 sigma = 34 mm (test performed on 563 independent points). Recommended as part of transformation between Baltic 1957 height and EVRF2007 height (see concatenated operation code 8363).


auth_name: EPSG
name: ETRS89 to ETRS89 + EVRF2007 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Slovakia_ETRS89h_to_EVRF2007.gtx
interpolation_crs_auth_name: EPSG
operation_version: UGKK-Svk
description:
Uses ETRS89 (realization ETRF2000) and quasigeoid model DMQSK2014E. 1 sigma = 29 mm (test performed on 93 independent points). Recommended as part of transformation between Baltic 1957 height and EVRF2007 height (see concatenated operation code 8363).


auth_name: EPSG
name: BD72 to ETRS89 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: bd72lb72_etrs89lb08.gsb
operation_version: IGN-Bel 0.01m
description:
File name is lower case and despite its name is between geographic CRSs. (Similarly-named file in upper case BD72LB72_ETRS89LB08 operates in projected CRS domain).


auth_name: EPSG
name: RGF93 v2 to NGF-IGN69 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAF09.mnt
operation_version: IGN Fra 09
description:
Replaces ggf97a geoid model [RGF93 v1 to NGF IGN69 height (1) (code 10000)]. Replaced by RAF18 model. Accuracy at each 0.0333333333333° in longitude and 0.025° in latitude grid node is given within the model file.


auth_name: EPSG
name: RGF93 v2 to NGF-IGN78 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAC09.mnt
operation_version: IGN Fra Cor 09
description:
Replaces ggf97a model (code 10002)]. Replaced by RAC23 model (code 10506). Accuracy at each grid node is given in the geoid model file. For reversible alternative see RGF93 v2 to RGF93 v2 + NGF-IGN78 height (2) (code 9639).


auth_name: EPSG
name: GDA94 to GDA2020 (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: GDA94_GDA2020_conformal_christmas_island.gsb
operation_version: ICSM-Cxr Conf
description:
See GDA94 to GDA2020 (1) (code 8048) for transformation using Helmert method which gives identical results.


auth_name: EPSG
name: GDA94 to GDA2020 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: GDA94_GDA2020_conformal.gsb
operation_version: ICSM-Aus NTv2 Conf
description:
Gives identical results to Helmert transformation GDA94 to GDA2020 (1) (code 8048). See GDA94 to GDA2020 (2) (code 8447) for alternative with local distortion modelling included. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use.


auth_name: EPSG
name: GDA94 to GDA2020 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: GDA94_GDA2020_conformal_and_distortion.gsb
operation_version: ICSM-Aus Conf and Dist
description:
See GDA94 to GDA2020 (1) or (3) (codes 8048 and 8446) for alternative conformal-only transformation without local distortion modelling. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use.


auth_name: EPSG
name: GDA2020 to AHD height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (AUSGeoid v2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AUSGeoid2020_20180201.gsb
operation_version: GA-Aus 2020
description:
File name previously called AUSGeoid2020_windows_binary.gsb. Uncertainties given in accompanying file AUSGeoid2020_20180201_error.gsb. For reversible alternative to this transformation see GDA2020 to GDA2020 + AHD height (1) (code 9466).


auth_name: EPSG
name: St. George Island to NAD83 (2)
method_auth_name: EPSG
method_name: NADCON5 (2D)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nadcon5.sg1952.nad83_1986.stgeorge.lat.trn.20160901.b
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nadcon5.sg1952.nad83_1986.stgeorge.lon.trn.20160901.b
operation_version: NGS-Usa AK StG Nadcon5
description:
Uses NADCON5 method which expects longitudes positive east in range 0-360°; EPSG source and target CRSs have longitudes positive east in range -180° to +180°.


auth_name: EPSG
name: NAD27 to NAD83 (8)
method_auth_name: EPSG
method_name: NADCON5 (2D)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nadcon5.nad27.nad83_1986.alaska.lat.trn.20160901.b
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nadcon5.nad27.nad83_1986.alaska.lon.trn.20160901.b
operation_version: NGS-Usa AK Nadcon5
description:
Uses NADCON5 method which expects longitudes positive east in range 0-360°; source and target CRSs have longitudes positive east in range -180° to +180°. Accuracy at 67% confidence level is 0.5m onshore, 5m nearshore and undetermined farther offshore.


auth_name: EPSG
name: NAD27 to NAD83 (7)
method_auth_name: EPSG
method_name: NADCON5 (2D)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude difference file
grid_name: nadcon5.nad27.nad83_1986.conus.lat.trn.20160901.b
grid2_param_auth_name: EPSG
grid2_param_name: Longitude difference file
grid2_name: nadcon5.nad27.nad83_1986.conus.lon.trn.20160901.b
operation_version: NGS-Usa Conus Nadcon5
description:
NADCON5 method expects longitudes 0-360°; source and target CRS longitudes in range ±180°. Accuracy at 67% confidence level is 0.15m onshore, 1m nearshore and undetermined farther offshore. For application in Gulf of Mexico refer to IOGP report 373-26.


auth_name: EPSG
name: Canada velocity grid v6
method_auth_name: EPSG
method_name: Point motion (geog3D domain) using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v6VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRC-Can cvg6.0
description:
File initially published as cvg60.cvb, later renamed to NAD83v6VG.gvb with no change of content. Not recommended for height transformation north of 60°N due to inaccuracies in the vertical component of the model. Replaced by Canada velocity grid v7. Although the interpolation CRS is given as NAD83(CSRS)v6 (also known as NAD83(CSRS) 2010), any version of NAD83(CSRS) may be used for grid interpolation without significant error.


auth_name: EPSG
name: RGF93 v2 to NGF-IGN69 height (3)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAF18.mnt
operation_version: IGN Fra 18
description:
Replaces RAF09 geoid model [RGF93 v2 to NGF-IGN69 height (2) (code 8371)]. Replaced by RAF18b model. May also be found with filename RAF18.tac. For reversible alternative see RGF93 v2 to RGF93 v2 + NGF-IGN69 height (3) (code 9638).


auth_name: EPSG
name: ITRF96 to NZGD2000 (1)
method_auth_name: EPSG
method_name: New Zealand Deformation Model
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: nzgd2000_deformation_20000101_full.zip
operation_version: LINZ-Nzl 2000-01-01
description:
Used as the second step in ITRF to NZGD2000 concatenated operations. Replaced by 2013-08-01 model (CT code 9085).


auth_name: EPSG
name: ITRF96 to NZGD2000 (2)
method_auth_name: EPSG
method_name: New Zealand Deformation Model
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: nzgd2000_deformation_20130801_full.zip
operation_version: LINZ-Nzl 2013-08-01
description:
Used as the second step in ITRF to NZGD2000 concatenated operations. Replaces 2000-01-01 model (CT code 9084). Replaced by 2013-08-01 model (CT code 9086).


auth_name: EPSG
name: ITRF96 to NZGD2000 (3)
method_auth_name: EPSG
method_name: New Zealand Deformation Model
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: nzgd2000_deformation_20140201_full.zip
operation_version: LINZ-Nzl 2014-02-01
description:
Used as the second step in ITRF to NZGD2000 concatenated operations. Replaces 2013-08-01 model (CT code 9085). Replaced by 2015-01-01 model (CT code 9087).


auth_name: EPSG
name: ITRF96 to NZGD2000 (4)
method_auth_name: EPSG
method_name: New Zealand Deformation Model
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: nzgd2000_deformation_20150101_full.zip
operation_version: LINZ-Nzl 2015-01-01
description:
Used as the second step in ITRF to NZGD2000 concatenated operations. Replaces 2014-02-01 model (CT code 9086). Replaced by 2016-07-01 model (CT code 9088).


auth_name: EPSG
name: ITRF96 to NZGD2000 (5)
method_auth_name: EPSG
method_name: New Zealand Deformation Model
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: nzgd2000_deformation_20160701_full.zip
operation_version: LINZ-Nzl 2016-07-01
description:
Used as the second step in ITRF to NZGD2000 concatenated operations. Replaces 2015-01-01 model (CT code 9087). Replaced by 2017-12-01 model (CT code 9089).


auth_name: EPSG
name: ITRF96 to NZGD2000 (6)
method_auth_name: EPSG
method_name: New Zealand Deformation Model
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: nzgd2000_deformation_20171201_full.zip
operation_version: LINZ-Nzl 2017-12-01
description:
Used as the second step in ITRF to NZGD2000 concatenated operations. Replaces 2016-07-01 model (CT code 9088). Replaced by 2018-07-01 model (CT code 9090).


auth_name: EPSG
name: ITRF96 to NZGD2000 (7)
method_auth_name: EPSG
method_name: New Zealand Deformation Model
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: nzgd2000_deformation_20180701_full.zip
operation_version: LINZ-Nzl 2018-07-01
description:
Used as the second step in ITRF to NZGD2000 concatenated operations. Replaces 2017-12-01 model (CT code 9089).


auth_name: EPSG
name: NAD27 to NAD83(CSRS)v3 (5)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: ON27CSv1.GSB
operation_version: LIO-Can Ont ex Tor
description:
Derived through NAD83(CSRS)v3 but within accuracy of transformation may be assumed to apply to any version. For Toronto use NAD27 to NAD83(CSRS) (6) (CT code 9108).


auth_name: EPSG
name: NAD27 to NAD83(CSRS)v3 (6)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TO27CSv1.GSB
operation_version: LIO-Can Ont Tor
description:
Derived through NAD83(CSRS)v3 but within accuracy of transformation may be assumed to apply to any version. For Ontario excluding Toronto use NAD27 to NAD83(CSRS) (5) (CT code 9107). Previously available from Land Information Ontario as TOR27CSv1.GSB.


auth_name: EPSG
name: NAD27(76) to NAD83(CSRS)v3 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: ON76CSv1.GSB
operation_version: LIO-Can Ont
description:
Derived through NAD83(CSRS)v3 but within accuracy of transformation may be assumed to apply to any version.


auth_name: EPSG
name: NAD27 to NAD83(CSRS)v2 (7)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: BC_27_98.GSB
operation_version: GeoBC-Can BC CSRSv2
description:
Derived through NAD83(CSRS)v2. Replaced by NAD27 to NAD83(CSRS) (8) (CT code 9113) for CRD, NAD27 to NAD83(CSRS) (9) (CT code 9114) forn north Vancouver Island and NAD27 to NAD83(CSRS) (10) (CT code 9115) for mainland.


auth_name: EPSG
name: NAD83 to NAD83(CSRS)v2 (6)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: BC_93_98.GSB
operation_version: GeoBC-Can BC CSRSv2
description:
Derived through NAD83(CSRS)v2. Replaced by NAD83 to NAD83(CSRS) (7) (CT code 9117) for CRD, NAD83 to NAD83(CSRS) (8) (CT code 9118) for north Vancouver Island and NAD83 to NAD83(CSRS) (9) (CT code 9119) for mainland.


auth_name: EPSG
name: ITRF2008 to CGVD2013(CGG2013) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CGG2013i08.byn
operation_version: NRC Can CGG2013
description:
Uses CGG2013 model derived through NAD83(CSRS)v6. In ITRF the CGVD2013 geoid velocity is not zero so CGVD2013 heights derived through ITRF change with respect to NAD83(CSRS)v6: CGRSC recommends using NAD83(CSRS)v6 (code 9246). Replaced by CT code 9125.


auth_name: EPSG
name: ITRF2008 to CGVD2013a(2010) height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CGG2013ai08.byn
operation_version: NRC Can CGG2013a
description:
Replaces CT code 9124. Uses CGG2013a model at epoch 2010.0. In ITRF the CGVD2013 geoid velocity is not zero so CGVD2013 heights derived through ITRF change with respect to those derived through NAD83(CSRS). CGRSC recommends using NAD83(CSRS) (code 9247).


auth_name: EPSG
name: RGAF09 to IGN 2008 LD height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RALD2016.mnt
operation_version: IGN-Glp Des
description:
Replaces RGAF09 to IGN 1992 LD height (1) (CT code 5507). Accuracy 0.1-0.2m within onshore area. For reversible alternative to this transformation see RGAF09 to RGAF09 + IGN 2008 LD height (1) (code 9636).


auth_name: EPSG
name: RRAF 1991 to IGN 2008 LD height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RALDW842016.mnt
operation_version: IGN Glp Des
description:
Replaces RRAF 1991 to IGN 1992 LD height (1) (CT code 4566). Accuracy 0.1-0.2m within onshore area. For reversible alternative to this transformation see RRAF 1991 to RRAF 1991 + IGN 2008 LD height (1) (code 9642).


auth_name: EPSG
name: RGAF09 to Guadeloupe 1988 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAGTBT2016.mnt
operation_version: IGN Glp GT 2016
description:
Replaces RGAF09 to Guadeloupe 1988 height (1) (CT code 5503). Accuracy 0.01-0.05m within onshore areas. For reversible alternative to this transformation see RGAF09 to RGAF09 + Guadeloupe 1988 height (2) (code 9631).


auth_name: EPSG
name: RGAF09 to IGN 1988 LS height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RALS2016.mnt
operation_version: IGN Glp LSt 2016
description:
Replaces RGAF09 to IGN 1988 LS height (2) (CT code 5506). Accuracy 0.05-0.1m within onshore area. For reversible alternative to this transformation see RGAF09 to RGAF09 to IGN 1988 LS height (2) (code 9632).


auth_name: EPSG
name: RGAF09 to IGN 1988 MG height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAMG2016.mnt
operation_version: IGN Glp MG 2016
description:
Replaces RGAF09 to IGN 1988 MG height (1), CT code 5504. Accuracy 0.0.5-0.1m within onshore area. For reversible alternative to this transformation see RGAF09 to RGAF09 + IGN 1988 MG height (2) (code 9633).


auth_name: EPSG
name: RGAF09 to Martinique 1987 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAMART2016.mnt
operation_version: IGN Mtq 2016
description:
Replaces RGAF09 to Martinique 1987 height (1) (CT code 5502). Accuracy 0.01m to 0.05m within onshore area. For reversible alternative to this transformation see RGAF09 to RGAF09 + Martinique 1987 height (2) (code 9637).


auth_name: EPSG
name: RGAF09 to IGN 1988 SB height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_sbv2.mnt
operation_version: IGN Glp StB v2
description:
Accuracy 0.05m to 0.1m. Replaces RGAF09 to IGN 1988 SB height (1), transformation code 5508. For reversible alternative to this transformation see RGAF09 to RGAF09 + IGN 1988 SB height (2) (code 9634).


auth_name: EPSG
name: RGAF09 to IGN 1988 SM height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gg10_smv2.mnt
operation_version: IGN Glp StM v2
description:
Accuracy 0.05m to 0.1m. Replaces RGAF09 to IGN 1988 SM height (1), transformation code 5505. For reversible alternative to this transformation see RGAF09 to RGAF09 + IGN 1988 SM height (2) (code 9635).


auth_name: EPSG
name: RGSPM06 to Danger 1950 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RASPM2018.mnt
operation_version: IGN-SPM v2
description:
Accuracy 0.01m to 0.05m within onshore area. Replaces RGSPM06 to Danger 1950 height (1), CT code 9137. For reversible alternative to this transformation see RGSPM06 to RGSPM06 + Danger 1950 height (2) (code 9641).


auth_name: EPSG
name: NAD83(2011) to NAVD88 height (3)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2018u0.bin
operation_version: NGS-US Conus 18
description:
Uses Geoid18 hybrid model. Replaces 12B model. See information source for further information. For reversible alternative to this transformation see NAD83(2011) to NAD83(2011) + NAVD88 height (3) (code 9595).


auth_name: EPSG
name: NAD83(2011) to PRVD02 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2018p0.bin
operation_version: NGS-Pri 18
description:
Uses Geoid18 hybrid model. Replaces 12B model. See information source for further information. For reversible alternative to this transformation see NAD83(2011) to PRVD02 height (2) (code 9622).


auth_name: EPSG
name: NAD83(2011) to VIVD09 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2018p0.bin
operation_version: NGS-Vir 18
description:
Uses Geoid18 hybrid model. Replaces 12B model. See information source for further information. For reversible alternative to this transformation see NAD83(2011) to NAD83(2011) + VIVD09 height (2) (code 9623).


auth_name: EPSG
name: ISN93 to ISN2016 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: ISN93_ISN2016.gsb
operation_version: LMI-Isl
description:
Grid transformation based on Kriging between ISN93 and ISN2016. Accuracy is better than 5 cm in stable areas but can be around 25 cm in areas that have suffered deformation due to earthquake or volcanic eruption.


auth_name: EPSG
name: ISN2004 to ISN2016 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: ISN2004_ISN2016.gsb
operation_version: LMI-Isl
description:
Grid transformation based on Kriging between ISN2004 and ISN2016. Accuracy is better than 5 cm in stable areas but can be around 25 cm in areas that have suffered deformation due to earthquake or volcanic eruption.


auth_name: EPSG
name: ATS77 to NAD83(CSRS)v3 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NS778301.gsb
operation_version: NSGC-Can NS
description:
Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1851. Replaced by ATS77 to NAD83(CSRS)v6 (4) (transformation code 9106).


auth_name: EPSG
name: NAD27 to NAD83(CSRS)v2 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: QUE27-98.gsb
operation_version: SGQ-Can QC
description:
Also found with file name NA27SCRS.GSB. Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27 (code 4267) and NAD83(CSRS) (code 4617) have longitudes positive east. Can be taken as an approximate CT NAD27 to WGS 84 - see code 1692.


auth_name: EPSG
name: NAD27(CGQ77) to NAD83(CSRS)v2 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: CGQ77-98.gsb
operation_version: SGQ-Can QC
description:
Also found with file name CQ77SCRS.GSB. Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27(CGQ77) (code 4609) and NAD83(CSRS) (code 4617) have longitudes positive east.


auth_name: EPSG
name: NAD83 to NAD83(CSRS)v2 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NAD83-98.gsb
operation_version: SGQ-Can QC
description:
Also found with file name NA83SCRS.GSB. Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD83 (code 4269) and NAD83(CSRS)v2 (code 8237) have longitudes positive east. Can be taken as an approximate CT NAD83 to WGS 84 - see code 1696.


auth_name: EPSG
name: NAD83 to NAD83(CSRS)v4 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: AB_CSRS.DAC
operation_version: AB Env-Can AB
description:
This gridded difference file AB_CSRS.DAC may need to be renamed to AB_CSRS.gsb or AB_CSRSV4.gsb to run in some software. Formats identical, but AB file is provincial fit only. Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1702.


auth_name: EPSG
name: NAD83(CSRS)v6 to CGVD2013(CGG2013) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CGG2013n83.byn
operation_version: NRC Can CGG2013
description:
Uses CGG2013 model which uses bi-quadratic interpolation; bi-linear interpolation of the grid file will give results agreeing to within 1cm 99.97% of the time. Replaced by CGG2013a model (CT code 9247).


auth_name: EPSG
name: NAD83(CSRS)v6 to CGVD2013a(2010) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CGG2013an83.byn
operation_version: NRC Can CGG2013a
description:
Defines CGVD2013 heights. Because CSRS ellipsoidal heights are affected by glacial isostatic adjustment, CGVD2013 heights also change with time. For reversible alternative see NAD83(CSRS)v6 to NAD83(CSRS)v6 + CGVD2013a(2010) height (1) (code 9644).


auth_name: EPSG
name: POSGAR 2007 to SRVN16 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GEOIDE-Ar16.gri
operation_version: IGN-Arg
description:
Uses geoid model Ar16. See information source for more information. For reversible alternative to this transformation see POSGAR 2007 to POSGAR 2007 + SRVN16 height (1) (code 9621).


auth_name: EPSG
name: GHA height to EVRF2000 Austria height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (BEV AT)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: GV_HoehenGrid_V1.csv
interpolation_crs_auth_name: EPSG
operation_version: BEV-Aut
description:
Care! Austrian literature describes this transformation in direction EVRF2000 Austria height to GHA height with offset subtracted. EPSG method has offset as an addition. See method formula and example. The grid is implemented in BEV-Transformator.


auth_name: EPSG
name: ETRS89 to EVRF2000 Austria height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (BEV AT)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GEOID_GRS80_Oesterreich.csv
interpolation_crs_auth_name: EPSG
operation_version: BEV-Aut
description:
Austrian Geoid 2008. Accuracy 5cm (1 sigma). The transformation is implemented in BEV-Transformator. For reversible alternative to this transformation see ETRS89 to ETRS89 + EVRF2000 Austria height (1) (code 9600).


auth_name: EPSG
name: MGI to EVRF2000 Austria height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (BEV AT)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GEOID_BESSEL_Oesterreich.csv
interpolation_crs_auth_name: EPSG
operation_version: BEV-Aut
description:
Austrian Geoid 2008 (Bessel ellipsoid). Accuracy 5cm (1 sigma). The transformation is implemented in BEV-Transformator. For reversible alternative to this transformation see MGI to MGI + EVRF2000 Austria height (1) (code 9601).


auth_name: EPSG
name: ETRS89 to GHA height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (BEV AT)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GV_Hoehengrid_plus_Geoid_V3.csv
interpolation_crs_auth_name: EPSG
operation_version: BEV-Aut
description:
This transformation gives same result as concatenation of ETRS89 to EVRF2000 Austria height and EVRF2000 Austria height to GHA height transformations, CTs code 9276 and 9275. Accuracy 5cm (1 sigma). The transformation is implemented in BEV-Transformator.


auth_name: EPSG
name: ITRF2005 to SA LLD height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: SAGEOID2010.dat
operation_version: NGI-Zaf
description:
Hybrid geoid referenced to ITRF2005@2010.02. Accuracy 7cm at 1 sigma. For reversible alternative to this transformation see ITRF2005 to ITRF2005 + SA LLD height (1) (code 9643).


auth_name: EPSG
name: Amersfoort to ETRS89 (9)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: rdtrans2018.gsb
operation_version: NSGI-Nld 2018
description:
Defines Amersfoort. Horizontal component of official transformation RDNAPTRANS(TM)2018. Replaces Amersfoort to ETRS89 (7) (tfm code 7000).


auth_name: EPSG
name: ETRS89 to NAP height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: nlgeo2018.gtx
operation_version: NSGI-Nld 2018
description:
Vertical component of official transformation RDNAPTRANS(TM)2018. Replaces earlier versions of RDNAPTRANS(TM). For reversible alternative to this transformation see ETRS89 to ETRS89 + NAP height (2) (code 9597).


auth_name: EPSG
name: HS2-IRF to ETRS89 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: HS2TN15_NTv2.gsb
operation_version: HS2-Gbr OSNet2009
description:
In conjunction with the HS2-TM projection (code 9301), emulates zero-distortion HS2P1+14 Snake projection. For use with OSNet v2009 CORS. Supersedes HS2TN02 used with OSNet v2001. Derived at 350000 locations, RMS 0.15 mm; this is considered errorless.


auth_name: EPSG
name: ETRS89 to HS2-VRF height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HS2GM15W.grd
operation_version: HS2-Gbr HS2GM15 W
description:
Defines HS2-VRF using OSNet v2009. Full grid also available in a single file in each of Leica, Topcon and Trimble formats.


auth_name: EPSG
name: SRGI2013 to INAGeoid2020 v1 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: INAGEOID2020v1.gtx
operation_version: BIG-Idn INAGeoid20 v1
description:
Defines INAGeoid2020 v1 reference surface and as such is considered to be errorless. Internal accuracy is between 0.05 and 0.24m on the large islands of Indonesia. Replaced by INAGeoid2020 v2 (CT code 20043). Before 2022, v1 file name was INAGEOID20.gtx.


auth_name: EPSG
name: DHDN to ETRS89 (10)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: SeTa2016.gsb
operation_version: LVGL-Deu SL 2016
description:
Replaces SeTa2009 from 2018-01-15. Derived using the 2016 implementation of ETRS89 / DREF91 and DHHN2016. Coincident with the transformation of cadastral data from DHDN to ETRS89 used by LVGL at a level of 1-2 mm.


auth_name: EPSG
name: NZVD2016 height to Auckland 1946 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: auckht1946-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ AUCK gtx
description:
Derived at 260 control points. Mean offset 0.292m, standard deviation 0.029m, maximum difference from mean 0.075m. Supersedes NZVD2016 height to Auckland 1946 height (1) (code 7860) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Bluff 1955 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: blufht1955-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ BLUF gtx
description:
Derived at 71 control points. Mean offset 0.273m, standard deviation 0.034m, maximum difference from mean 0.079m. Supersedes NZVD2016 height to Bluff 1955 height (1) (code 7861) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Dunedin 1958 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: duneht1958-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ DUNE gtx
description:
Derived at 197 control points. Mean offset 0.326m, standard deviation 0.043m, maximum difference from mean 0.152m. Supersedes NZVD2016 height to Dunedin 1958 height (1) (code 7862) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Dunedin-Bluff 1960 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: dublht1960-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ DUBL gtx
description:
Derived at 205 control points. Mean offset 0.254m, standard deviation 0.039m, maximum difference from mean 0.11m. Supersedes NZVD2016 height to Dunedin-Bluff 1960 height (1) (code 7863) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Gisborne 1926 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: gisbht1926-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ GISB gtx
description:
Derived at 274 control points. Mean offset 0.343m, standard deviation 0.025m, maximum difference from mean 0.09m. Supersedes NZVD2016 height to Gisborne 1926 height (1) (code 7864) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Lyttelton 1937 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: lyttht1937-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ LYTT gtx
description:
Derived at 923 control points. Mean offset 0.34m, standard deviation 0.041m, maximum difference from mean 0.149m. Supersedes NZVD2016 height to Lyttelton 1937 height (1) (code 7865) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Moturiki 1953 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: motuht1953-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ MOTU gtx
description:
Derived at 519 control points. Mean offset 0.309m, standard deviation 0.071m, maximum difference from mean 0.231m. Supersedes NZVD2016 height to Moturiki 1953 height (1) (code 7866) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Napier 1962 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: napiht1962-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ NAPI gtx
description:
Derived at 207 control points. Mean offset 0.203m, standard deviation 0.034m, maximum difference from mean 0.096m. Supersedes NZVD2016 height to Napier 1962 height (1) (code 7867) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Nelson 1955 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: nelsht1955-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ NELS gtx
description:
Derived at 256 control points. Mean offset 0.329m, standard deviation 0.039m, maximum difference from mean 0.114m. Supersedes NZVD2016 height to Nelson 1955 height (1) (code 7868) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to One Tree Point 1964 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: ontpht1964-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ ONTP gtx
description:
Derived at 137 control points. Mean offset 0.077m, standard deviation 0.042m, maximum difference from mean 0.107m. Supersedes NZVD2016 height to One Tree Point 1964 height (1) (code 7869) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Stewart Island 1977 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: stisht1977-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ STWT gtx
description:
Derived at 4 control points. Mean offset 0.299m, standard deviation 0.025m, maximum difference from mean 0.039m. Supersedes NZVD2016 height to Stewart Island 1977 height (1) (code 7870) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Taranaki 1970 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: taraht1970-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ TARA gtx
description:
Derived at 125 control points. Mean offset 0.286m, standard deviation 0.026m, maximum difference from mean 0.07m. Supersedes NZVD2016 height to Taranaki 1970 height (1) (code 7871) after change of grid file format.


auth_name: EPSG
name: NZVD2016 height to Wellington 1953 height (2)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: wellht1953-nzvd2016.gtx
interpolation_crs_auth_name: EPSG
operation_version: LINZ-NZ WGTN gtx
description:
Derived at 137 control points. Mean offset 0.408m, standard deviation 0.054m, maximum difference from mean 0.112m. Supersedes NZVD2016 height to Wellington 1953 height (1) (code 7872) after change of grid file format.


auth_name: EPSG
name: NZGD2000 to NZVD2009 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: nzgeoid2009.gtx
operation_version: LINZ-NZ 2009 gtx
description:
Defines NZVD2009 vertical datum (datum code 1039, CRS code 4440). Supersedes NZGD2000 to NZVD2009 height (1) (code 4459) after change of grid file format. For reversible alternative to this CT see NZGD2000 to NZGD2000 + NZVD2009 height (2) (code 9627).


auth_name: EPSG
name: NZGD2000 to NZVD2016 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: nzgeoid2016.gtx
operation_version: LINZ-NZ 2016 gtx
description:
Defines NZVD2016 vertical datum (datum code 1169, CRS code 7839). Supersedes NZGD2000 to NZVD2016 height (1) (code 7840) after change of grid file format. For reversible alternative to this CT see NZGD2000 to NZGD2000 + NZVD2016 height (2) (code 9628).


auth_name: EPSG
name: NTF to RGF93 v1 (1)
method_auth_name: EPSG
method_name: Geocentric translations (geog2D domain) by grid (IGN)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geocentric translation file
grid_name: gr3df97a.txt
interpolation_crs_auth_name: EPSG
operation_version: IGN-Fra 1m
description:
May be emulated using NTv2 method - see tfm code 15958. Also used to transform between NTF and later realizations of RGF93.


auth_name: EPSG
name: NEA74 Noumea to RGNC91-93 (3)
method_auth_name: EPSG
method_name: Geocentric translations (geog2D domain) by grid (IGN)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geocentric translation file
grid_name: gr3dnc03a.mnt
interpolation_crs_auth_name: EPSG
operation_version: BGN-Ncl 0.05m
description:
Developed in July 2002 and officially adopted in August 2005. May be emulated using NTv2 method - see RGNC91-93 to NEA74 Noumea (4) (code 1295).


auth_name: EPSG
name: IGN72 Grande Terre to RGNC91-93 (4)
method_auth_name: EPSG
method_name: Geocentric translations (geog2D domain) by grid (IGN)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geocentric translation file
grid_name: gr3dnc01b.mnt
interpolation_crs_auth_name: EPSG
operation_version: BGN-Ncl 0.1m
description:
Developed in July 2002 and officially adopted in August 2005. May be emulated using NTv2 method - see RGNC91-93 to IGN72 Grande Terre (6) (code 15962).


auth_name: EPSG
name: DHDN to ETRS89 (9)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: BWTA2017.gsb
operation_version: LGL-Deu BWTA2017
description:
Official transformation for the state of Baden-Württemberg. Used in ATKIS (Amtliches Topographisch-Kartographisches Informationssystem [Official Topographic and Cartographic Information System]).


auth_name: EPSG
name: RGNC91-93 to NGNC08 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Ranc08_Circe.mnt
operation_version: BGN-Ncl RANC08
description:
Geoid model RANC08 realizes NGNC08 height (CRS code 9351) to a precision of 2-5cm. For reversible alternative to this transformation see RGNC91-93 to RGNC91-93 + NGNC08 height (1) (code 9640).


auth_name: EPSG
name: KSA-GRF17 to KSA-VRF14 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: KSA-GEOID17.gra
operation_version: GCS-Sau
description:
Hybrid geoid, grid resolution 0.02° lat x 0.025° lon. Accuracy ~2 cm in Eastern region and ~10-20 cm in rest of KSA. File also available in IGN2009 format. To access KSA-GEOID17 contact GCS at info@gcs.gov.sa. For reversible alternative see code 9620.


auth_name: EPSG
name: ETRS89 to TPEN11-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-TPEN11-IRF.gsb
operation_version: NR-Gbr TPEN11 OSNet2009
description:
In conjunction with the TPEN11-TM map projection (code 9366) applied to TPEN11-IRF (code 9364), emulates the TPEN11 Snake and TPEN11ext Snake projections. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines TPEN11-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to MML07-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-MML07-IRF.gsb
operation_version: NR-Gbr MML07 OSNet2009
description:
In conjunction with the MML07-TM map projection (code 9370) applied to MML07-IRF (code 9372), emulates the MML07 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines MML07-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to AbInvA96_2020-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-AbInvA96_2020-IRF.gsb
operation_version: TS-Gbr A96 OSNet2009
description:
In conjunction with AbInvA96_2020-TM map projection (code 9385) applied to AbInvA96_2020-IRF (code 9384), emulates the AbInvA96_2020 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines AbInvA96_2020-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to Alicante height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Alicante height (1) (code 9605).


auth_name: EPSG
name: ETRS89 to Mallorca height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Mallorca height (1) (code 9608).


auth_name: EPSG
name: ETRS89 to Menorca height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Menorca height (1) (code 9609).


auth_name: EPSG
name: ETRS89 to Ibiza height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Ibiza height (1) (code 9607).


auth_name: EPSG
name: ETRS89 to Ceuta 2 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Ceuta 2 height (1) (code 9606).


auth_name: EPSG
name: REGCAN95 to Lanzarote height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP_Canarias.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see REGCAN95 to REGCAN95 + Lanzarote height (1) (code 9615).


auth_name: EPSG
name: REGCAN95 to Fuerteventura height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP_Canarias.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see REGCAN95 to REGCAN95 + Fuerteventura height (1) (code 9611).


auth_name: EPSG
name: REGCAN95 to Gran Canaria height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP_Canarias.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see REGCAN95 to REGCAN95 + Gran Canaria height (1) (code 9612).


auth_name: EPSG
name: REGCAN95 to Tenerife height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP_Canarias.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see REGCAN95 to REGCAN95 + Tenerife height (1) (code 9616).


auth_name: EPSG
name: REGCAN95 to La Gomera height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP_Canarias.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see REGCAN95 to REGCAN95 + La Gomera height (1) (code 9613).


auth_name: EPSG
name: REGCAN95 to La Palma height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP_Canarias.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see REGCAN95 to REGCAN95 + La Palma height (1) (code 9614).


auth_name: EPSG
name: REGCAN95 to El Hierro height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP_Canarias.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see REGCAN95 to REGCAN + El Hierro height (1) (code 9610).


auth_name: EPSG
name: ETRS89 to GBK19-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-GBK19-IRF.gsb
operation_version: NR-Gbr GBK19 OSNet2009
description:
In conjunction with the GBK19-TM map projection (code 9455) applied to GBK19-IRF (code 9453), emulates the GBK19 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines GBK19-IRF hence is errorless.


auth_name: EPSG
name: GDA2020 to AVWS height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (AUSGeoid v2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AGQG_20191107.gsb
operation_version: GA-Aus AGQG 20191107
description:
AGQG is used to realise AVWS. Uncertainties (4-8 cm across mainland Australia) given in accompanying file AGQG_uncertainty_20191107.gsb. For reversible alternative to this transformation see GDA2020 to GDA2020 + AVWS height (1) (code 9465).


auth_name: EPSG
name: GDA2020 to GDA2020 + AVWS height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (AUSGeoidv2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AGQG_20191107.gsb
interpolation_crs_auth_name: EPSG
operation_version: GA-Aus AGQG 20191107
description:
Reversible alternative to GDA2020 to AVWS height (1) (code 9461). AGQG is used to realise AVWS. Uncertainties (4-8 cm across mainland Australia) given in accompanying file AGQG_uncertainty_20191107.gsb.


auth_name: EPSG
name: GDA2020 to GDA2020 + AHD height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (AUSGeoidv2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AUSGeoid2020_20180201.gsb
interpolation_crs_auth_name: EPSG
operation_version: GA-Aus 2020
description:
Reversible alternative to GDA2020 to AHD height (1) (code 8451). Uncertainties given in accompanying file AUSGeoid2020_20180201_error.gsb


auth_name: EPSG
name: GDA94 to GDA94 + AHD height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (AUSGeoidv2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AUSGeoid09_V1.01.gsb
interpolation_crs_auth_name: EPSG
operation_version: GA-Aus09
description:
Reversible alternative to GDA94 to AHD height (1) and GDA94 to AHD (Tasmania) height (2) (codes 5656 and 5657). Uses AUSGeoid09 model which uses bi-cubic interpolation; bi-linear interpolation will give results agreeing to within 1cm 99.97% of the time.


auth_name: EPSG
name: Canada velocity grid v7
method_auth_name: EPSG
method_name: Point motion (geog3D domain) using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRC-Can cvg7.0
description:
File initially published with name cvg70.cvb, later renamed to NAD83v70VG.gvb with no change of content. Replaces Canada velocity grid v6 (code 8676). Replaced by Canada velocity grid v8 (code 10707). Although the interpolation CRS is given as NAD83(CSRS)v7 (also known as NAD83(CSRS) 2010), any version of NAD83(CSRS) may be used for grid interpolation without significant error.


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to NN54 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: href2008a.bin
operation_version: SK-Nor 2008
description:
For reversible alternative to this transformation see ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + NN54 height (1) (code 9594).


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to NN2000 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HREF2018B_NN2000_EUREF89.bin
operation_version: SK-Nor 2018
description:
For reversible alternative to this transformation see ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + NN2000 height (1) (code 9593).


auth_name: EPSG
name: NAD83 to NAD83(CSRS)v6 (10)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: NLCSRSV4A.GSB
operation_version: CGS-Can Nfl island
description:
File NLCSRSV4A.GSB corrects error in file header record previously released as NLCSRSV4.GSB. No change to gridded data.


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + NN2000 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HREF2018B_NN2000_EUREF89.bin
interpolation_crs_auth_name: EPSG
operation_version: SK-Nor 2018
description:
Reversible alternative to ETRS89-NOR [EUREF89] to NN2000 height (1) (code 9485). The interpolation CRS is EUREF89 but using any realization of ETRS89 including ensemble-based EPSG:4258 is adequate for grid interpolation.


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + NN54 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: href2008a.bin
interpolation_crs_auth_name: EPSG
operation_version: SK-Nor 2008
description:
Reversible alternative to ETRS89-NOR [EUREF89] to NN54 height (1) (code 9484). The interpolation CRS is EUREF89 but using any realization of ETRS89 including ensemble-based EPSG:4258 is adequate for grid interpolation.


auth_name: EPSG
name: NAD83(2011) to NAD83(2011) + NAVD88 height (3)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2018u0.bin
interpolation_crs_auth_name: EPSG
operation_version: NGS-US Conus 18
description:
Reversible alternative to NAD83(2011) to NAVD88 height (3) (code 9229). Uses Geoid18 hybrid model. Replaces 12B model. See information source for further information.


auth_name: EPSG
name: GR96 to GR96 + GVR2000 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gr2000g.gri
interpolation_crs_auth_name: EPSG
operation_version: SDFE-Grl
description:
Reversible alternative to GR96 to GVR2000 height (1) (code 8268). File is also available in NOAA VDatum format (ggeoid2000.gtx) and GeoTIFF format (ggeoid2000.tif).


auth_name: EPSG
name: GR96 to GR96 + GVR2016 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggeoid16.gri
interpolation_crs_auth_name: EPSG
operation_version: SDFE-Grl
description:
Reversible alternative to GR96 to GVR2016 height (1) (code 8269). File is also available in NOAA VDatum format (ggeoid2016.gtx) and GeoTIFF format (ggeoid2016.tif).


auth_name: EPSG
name: ETRS89 to ETRS89 + EVRF2000 Austria height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (BEV AT)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GEOID_GRS80_Oesterreich.csv
interpolation_crs_auth_name: EPSG
operation_version: BEV-Aut
description:
Reversible alternative to ETRS89 to EVRF2000 Austria height (1) (code 9276). Austrian Geoid 2008. Accuracy 5cm (1 sigma). The transformation is implemented in BEV-Transformator.


auth_name: EPSG
name: MGI to MGI + EVRF2000 Austria height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (BEV AT)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GEOID_BESSEL_Oesterreich.csv
interpolation_crs_auth_name: EPSG
operation_version: BEV-Aut
description:
Reversible alternative to MGI to EVRF2000 Austria height (1) (code 9277). Austrian Geoid 2008 (Bessel ellipsoid). Accuracy 5cm (1 sigma). The transformation is implemented in BEV-Transformator.


auth_name: EPSG
name: CIGD11 to CIGD11 + CBVD61 height (ft) (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (CI)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CBGM0811.TXT
interpolation_crs_auth_name: EPSG
operation_version: LSD-Cym
description:
Reversible alternative to CIGD11 to CBVD61 height (ft) (1) (code 6140). Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet.


auth_name: EPSG
name: CIGD11 to CIGD11 + GCVD54 height (ft) (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (CI)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GCGM0811.TXT
interpolation_crs_auth_name: EPSG
operation_version: LSD-Cym
description:
Reversible alternative to CIGD11 to GCVD54 height (ft) (1) (code 6138). Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet.


auth_name: EPSG
name: CIGD11 to CIGD11 + LCVD61 height (ft) (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (CI)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: LCGM0811.TXT
interpolation_crs_auth_name: EPSG
operation_version: LSD-Cym
description:
Reversible alternative to CIGD11 to LCVD61 height (ft) (1) (code 6139). Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet.


auth_name: EPSG
name: KSA-GRF17 to KSA-GRF17 + KSA-VRF14 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: KSA-GEOID17.gra
interpolation_crs_auth_name: EPSG
operation_version: GCS-Sau
description:
Reversible alternative to KSA-GRF17 to KSA-VRF14 height (1) (code 9355). File also available in IGN2009 format. To access KSA-GEOID17 contact GCS by email to info@gcs.gov.sa


auth_name: EPSG
name: POSGAR 2007 to POSGAR 2007 + SRVN16 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GEOIDE-Ar16.gri
interpolation_crs_auth_name: EPSG
operation_version: IGN-Arg
description:
Reversible alternative to POSGAR 2007 to SRVN16 height (1) (code 9256). Uses geoid model Ar16. See information source for more information.


auth_name: EPSG
name: NAD83(2011) to NAD83(2011) + PRVD02 height (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2018p0.bin
interpolation_crs_auth_name: EPSG
operation_version: NGS-Pri 18
description:
Reversible alternative to NAD83(2011) to PRVD02 height (2) (code 9230). Uses Geoid18 hybrid model. Replaces 12B model. See information source for further information.


auth_name: EPSG
name: NAD83(2011) to NAD83(2011) + VIVD09 height (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2018p0.bin
interpolation_crs_auth_name: EPSG
operation_version: NGS-Vir 18
description:
Reversible alternative to NAD83(2011) to VIVD09 height (2) (code 9231). Uses Geoid18 hybrid model. Replaces 12B model. See information source for further information.


auth_name: EPSG
name: NAD83(MA11) to NAD83(MA11) + GUVD04 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2012bg0.bin
interpolation_crs_auth_name: EPSG
operation_version: NGS-Gum 12B
description:
Reversible alternative to NAD83(MA11) to GUVD04 height (1) (code 7648). Uses Geoid12B hybrid model. See information source for further information.


auth_name: EPSG
name: NAD83(MA11) to NAD83(MA11) + NMVD03 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2012bg0.bin
interpolation_crs_auth_name: EPSG
operation_version: NGS-Mnp 12B
description:
Reversible alternative to NAD83(MA11) to NMVD03 height (1) (code 7649). Uses Geoid12B hybrid model. See information source for further information.


auth_name: EPSG
name: NAD83(PA11) to NAD83(PA11) + ASVD02 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (NGS bin)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2012bs0.bin
interpolation_crs_auth_name: EPSG
operation_version: NGS-Asm 12B
description:
Reversible alternative to NAD83(PA11) to ASVD02 height (1) (code 7650). Uses Geoid12B hybrid model. See information source for further information.


auth_name: EPSG
name: SRGI2013 to SRGI2013 + INAGeoid2020 v1 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: INAGEOID2020v1.gtx
interpolation_crs_auth_name: EPSG
operation_version: BIG-Idn INAGeoid20 v1
description:
Reversible alternative to SRGI2013 to INAGeoid2020 v1 height (1) (code 9305). Before 2022-07, file name was INAGEOID20.gtx.


auth_name: EPSG
name: RGF93 v2 to RGF93 v2 + NGF-IGN69 height (3)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAF18.mnt
interpolation_crs_auth_name: EPSG
operation_version: IGN Fra 18
description:
Reversible alternative to RGF93 v2 to NGF-IGN69 height (3) (code 8885). May also be found with filename RAF18.tac.


auth_name: EPSG
name: Baltic 1986 height to EVRF2019 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (asc)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: pl86_2019z.asc
interpolation_crs_auth_name: EPSG
operation_version: EuG-Pol 2019z 2020-09
description:
Determined at 300 points, SD 0.010m. Offset: mean 0.178m, minimum 0.144m, maximum 0.203m. May also use CRS 9702 (ETRF2000-PL) as interpolation CRS.


auth_name: EPSG
name: Baltic 1986 height to EVRF2019 mean-tide height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (asc)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: pl86_2019m.asc
interpolation_crs_auth_name: EPSG
operation_version: EuG-Pol 2019m 2020-09
description:
Determined at 300 points, SD 0.010m. Offset: mean 0.176m, minimum 0.133m, maximum 0.201m. May also use CRS 9702 (ETRF2000-PL) as interpolation CRS.


auth_name: EPSG
name: EVRF2007-PL height to EVRF2019 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (asc)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: pl07_2019z.asc
interpolation_crs_auth_name: EPSG
operation_version: EuG-Pol 2019z 2020-09
description:
Determined at 319 points, SD 0.003m. Offset: mean 0.012m, minimum 0.002m, maximum 0.024m. May also use CRS 9702 (ETRF2000-PL) as interpolation CRS.


auth_name: EPSG
name: EVRF2007-PL height to EVRF2019 mean-tide height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (asc)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: pl07_2019m.asc
interpolation_crs_auth_name: EPSG
operation_version: EuG-Pol 2019m 2020-09
description:
Determined at 319 points, SD 0.006m. Offset: mean 0.011m, minimum -0.006m, maximum 0.022m. May also use CRS 9702 (ETRF2000-PL) as interpolation CRS.


auth_name: EPSG
name: ETRF2000-PL to Baltic 1986 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (PL txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gugik-geoid2011-PL-KRON86-NH.txt
operation_version: GUGiK-Pol geoid11 KRON86
description:
For reversible alternative to this transformation see ETRF2000-PL to ETRF2000-PL + Baltic 1986 height (1) (code 9659).


auth_name: EPSG
name: ETRF2000-PL to EVRF2007-PL height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (PL txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gugik-geoid2011-PL-EVRF2007-NH.txt
operation_version: GUGiK-Pol geoid11 EVRF07
description:
For reversible alternative to this transformation see ETRF2000-PL to ETRF2000-PL + EVRF2007-PL height (1) (code 9661).


auth_name: EPSG
name: Baltic 1986 height to EVRF2007-PL height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (PL txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: gugik-evrf2007.txt
interpolation_crs_auth_name: EPSG
operation_version: GUGiK-Pol
description:
Gives same result as differencing quasi-geoid models geoid2011-KRON86 and geoid2011-EVRF2007 (transformations 9658 and 9660).


auth_name: EPSG
name: GDA94 to WGS 84 (3)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: GDA94_GDA2020_conformal_and_distortion.gsb
operation_version: ICSM-Aus Conf and Dist
description:
Equivalent to concatenation of CT 8447 and null CT 8450 through GDA2020. See GDA94 to WGS 84 (2) (CT code 9688) for conformal-only alternative (i.e. without distortion modelling).


auth_name: EPSG
name: WGS 84 to GDA2020 (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: GDA94_GDA2020_conformal_and_distortion.gsb
operation_version: ICSM-Aus Conf and Dist
description:
Equivalent to concatenation of null CT 1150 and CT 8447 through GDA94. See WGS 84 to GDA94 (3) (CT code 9690) for conformal-only alternative (i.e. without distortion modelling).


auth_name: EPSG
name: GDA2020 to AVWS height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (AUSGeoid v2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AGQG_20201120.gsb
operation_version: GA-Aus AGQG 20201120
description:
AGQG is used to realise AVWS. Uncertainties (4-8 cm across mainland Australia) given in accompanying file AGQG_uncertainty_20201120.gsb. For reversible alternative to this transformation see GDA2020 to GDA2020 + AVWS height (2) (code 9693).


auth_name: EPSG
name: GDA2020 to GDA2020 + AVWS height (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (AUSGeoidv2)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: AGQG_20201120.gsb
interpolation_crs_auth_name: EPSG
operation_version: GA-Aus AGQG 20201120
description:
Reversible alternative to GDA2020 to AVWS height (1) (code 9692). AGQG is used to realise AVWS. Uncertainties (4-8 cm across mainland Australia) given in accompanying file AGQG_uncertainty_20201120.gsb.


auth_name: EPSG
name: WGS 84 to WGS 84 + EGM2008 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Und_min2.5x2.5_egm2008_isw=82_WGS84_TideFree
interpolation_crs_auth_name: EPSG
operation_version: NGA-World 2.5min
description:
Reversible alternative to WGS 84 to EGM2008 height (1) (code 3858). Grid spacing is 2.5 arc-minutes. For a file with smaller (1 arc-minute) grid spacing (in principle more exactly representing the spherical harmonics) see CT code 9618. 


auth_name: EPSG
name: WGS 84 to WGS 84 + MSL height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz
interpolation_crs_auth_name: EPSG
operation_version: IOGP-World
description:
Reversible alternative to WGS 84 to MSL height (1) (code 8037). Parameter values are from WGS 84 to WGS 84 + EGM2008 height (2) (CT code 9618) assuming that the EGM2008 surface equals MSL surface within the accuracy of the transformation.


auth_name: EPSG
name: ETRF2000-PL to Baltic 1986 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (PL txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gugik-geoid2011-PL-KRON86-NH.txt
operation_version: GUGiK-Pol geoid11 KRON86
description:
For reversible alternative to this transformation see ETRF2000-PL to ETRF2000-PL + Baltic 1986 height (1) (code 9718).


auth_name: EPSG
name: ETRF2000-PL to EVRF2007-PL height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (PL txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gugik-geoid2011-PL-EVRF2007-NH.txt
operation_version: GUGiK-Pol geoid11 EVRF07
description:
For reversible alternative to this transformation see ETRF2000-PL to ETRF2000-PL + EVRF2007-PL height (1) (code 9720).


auth_name: EPSG
name: ETRS89 to Genoa 1942 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (ITAL2005)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: geo_igm_mar06.grd
operation_version: IGM-Ita 2005 main Sic
description:
Replaces ITALGEO99. For reversible alternative to this transformation see ETRS89 to ETRS89+ Genoa 1942 height (1) (code 9729).


auth_name: EPSG
name: ETRS89 to Cagliari 1956 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (ITAL2005)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: geo_igm_mar06.grd
operation_version: IGM-Ita 2005 Sardinia
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Cagliari 1956 height (1) (code 9730).


auth_name: EPSG
name: Monte Mario to ED50 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: 35160622_47161840_R40_E50.gsb
operation_version: IGM-Ita
description:
For the reverse transformation from ED50 to Monte Mario, iteration may be avoided by using an alternative grid file (35160622_47161840_E50_R40.gsb).


auth_name: EPSG
name: Monte Mario to IGM95 (4)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: 35160622_47161840_R40_F89.gsb
operation_version: IGM-Ita
description:
For the reverse transformation from IGM95 to Monte Mario, iteration may be avoided by using an alternative grid file (35160622_47161840_F89_R40.gsb).


auth_name: EPSG
name: Monte Mario to RDN2008 (5)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: 35160622_47161840_R40_F00.gsb
operation_version: IGM-Ita
description:
For the reverse transformation from RDN2008 to Monte Mario, iteration may be avoided by using an alternative grid file (35160622_47161840_F00_R40.gsb).


auth_name: EPSG
name: ED50 to IGM95 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: 35160622_47161840_E50_F89.gsb
operation_version: IGM-Ita
description:
For the reverse transformation from IGM95 to ED50, iteration may be avoided by using an alternative grid file (35160622_47161840_F89_E50.gsb).


auth_name: EPSG
name: ED50 to RDN2008 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: 35160622_47161840_E50_F00.gsb
operation_version: IGM-Ita
description:
For the reverse transformation from RDN2008 to ED50, iteration may be avoided by using an alternative grid file (35160622_47161840_F00_E50.gsb).


auth_name: EPSG
name: IGM95 to RDN2008 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: 35160622_47161840_F89_F00.gsb
operation_version: IGM-Ita
description:
For the reverse transformation from RDN2008 to IGM95, iteration may be avoided by using an alternative grid file (35160622_47161840_F00_F89.gsb).


auth_name: EPSG
name: ETRS89 to EOS21-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-EOS21-IRF.gsb
operation_version: NR-Gbr EOS21 OSNet2009
description:
In conjunction with the EOS21-TM map projection (code 9738) applied to EOS21-IRF (code 9739), emulates the EOS21 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines EOS21-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to ECML14_NB-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-ECML14_NB-IRF.gsb
operation_version: NR-Gbr ECML_NB OSNet2009
description:
In conjunction with the ECML14_NB-TM map projection (code 9760) applied to ECML14_NB-IRF (code 9758), emulates the ECML14_NB Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines ECML14_NB-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to EWR2-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-EWR2-IRF.gsb
operation_version: NR-Gbr EWR2 OSNet2009
description:
In conjunction with the EWR2-TM map projection (code 9765) applied to EWR2-IRF (code 9763), emulates the EWR2 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines EWR2-IRF hence is errorless. In 2024 the EWR2 Grid (ETRS89 / EWR2 SnakeGrid) was extended eastwards as the EWR3 Grid (ETRS89 / EWR3 SnakeGrid). To the west of Bedford the EWR2 Grid is an exact subset of the EWR3 Grid; over this extent the EWR3 Grid replaces the EWR2 Grid. The EWR2 emulation file TN15-ETRS89-to-EWR2-IRF.gsb is a subset of the EWR3 emulation file TN15-ETRS89-to-EWR3-IRF.gsb (see CT code 10850).


auth_name: EPSG
name: RGF93 v2b to NGF-IGN69 height (4)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAF18b.mnt
operation_version: IGN Fra 18b
description:
Replaces RAF18 geoid model [RGF93 v2 to NGF-IGN69 height (3)]. Accuracy at each grid node is in the geoid model file. Recommended interpolation method is bilinear. For reversible alternative see RGF93 v2b to RGF93 v2b + NGF-IGN69 height (4) (code 9787).


auth_name: EPSG
name: RGF93 v2b to RGF93 v2b + NGF-IGN69 height (4)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAF18b.mnt
interpolation_crs_auth_name: EPSG
operation_version: IGN Fra 18b
description:
Reversible alternative to RGF93 v2b to NGF-IGN69 height (4) (CT code 9786). Replaces RGF93 v2 to RGF93 v2 + NGF-IGN69 height (3) (CT code 9638).


auth_name: EPSG
name: ETRS89 to MRH21-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-MRH21-IRF.gsb
operation_version: NR-Gbr MHR21 OSNet2009
description:
In conjunction with MRH21-TM map projection (code 9868) applied to MRH21-IRF (code 9866), emulates the MRH21 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines MRH21-IRF hence is errorless.						


auth_name: EPSG
name: RGF93 v2b to NGF-IGN69 height (5)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAF20.tac
operation_version: IGN Fra 20
description:
Replaces RAF18b geoid model [RGF93 v2 to NGF-IGN69 height (4)]. Accuracy at each grid node is in the geoid model file. Recommended interpolation method is bilinear. For reversible alternative see RGF93 v2b to RGF93 v2b + NGF-IGN69 height (5) (code 9877).


auth_name: EPSG
name: RGF93 v2b to RGF93 v2b + NGF-IGN69 height (5)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAF20.tac
interpolation_crs_auth_name: EPSG
operation_version: IGN Fra 20
description:
Reversible alternative to RGF93 v2b to NGF-IGN69 height (5) (CT code 9876). Replaces RGF93 v2b to RGF93 v2b + NGF-IGN69 height (4) (CT code 9787).


auth_name: EPSG
name: ETRS89 to MOLDOR11-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-MOLDOR11-IRF.gsb
operation_version: NR-Gbr MOLDOR OSNet2009
description:
In conjunction with the MOLDOR11-TM map projection (code 9879) applied to MOLDOR11-IRF (code 9871), emulates the MOLDOR11 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines MOLDOR11-IRF hence is errorless.


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to CD Norway depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ChartDatum_above_Ellipsoid_EUREF89_v2021a.bin
operation_version: SK-Nor 2021
description:
For reversible alternative to this transformation see ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (1) (code 9885). Replaced by ETRS89-NOR [EUREF89] to CD Norway depth (2) (model "CD Norway 2021b", code 10130).


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ChartDatum_above_Ellipsoid_EUREF89_v2021a.bin
interpolation_crs_auth_name: EPSG
operation_version: SK-Nor 2021
description:
Reversible alternative to ETRS89-NOR [EUREF89] to CD Norway depth (1) (code 9884). Replaced by ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (2) (model "CD Norway 2021b", code 10133). The interpolation CRS is EUREF89 but using any realization of ETRS89 including ensemble-based EPSG:4258 is adequate for grid interpolation.


auth_name: EPSG
name: NTF to RGF93 v2 (1)
method_auth_name: EPSG
method_name: Geocentric translations (geog2D domain) by grid (IGN)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geocentric translation file
grid_name: gr3df97a.txt
interpolation_crs_auth_name: EPSG
operation_version: IGN-Fra 1m
description:
Parameter file is from NTF to RGF93 v1 (code 9327), assuming that RGF93 v1 is equivalent to RGF93 v2 within the accuracy of the transformation. May be emulated using NTv2 method - see CT code 9890.


auth_name: EPSG
name: NTF to RGF93 v2b (1)
method_auth_name: EPSG
method_name: Geocentric translations (geog2D domain) by grid (IGN)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geocentric translation file
grid_name: gr3df97a.txt
interpolation_crs_auth_name: EPSG
operation_version: IGN-Fra 1m
description:
Parameter file is from NTF to RGF93 v1 (code 9327), assuming that RGF93 v1 is equivalent to RGF93 v2b within the accuracy of the transformation. May be emulated using NTv2 method - see CT code 9891.


auth_name: EPSG
name: RGF93 v2 to NTF (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: rgf93_ntf.gsb
operation_version: ESRI-Fra 1m emulation
description:
Emulation of transformation NTF to RGF93 v2 (1), code 9888. Note that grid file parameters are of opposite sign. Parameter file is from RGF93 v1 to NTF (code 15958), assuming that RGF93 v1 is equivalent to RGF93 v2 within the accuracy of the CT.


auth_name: EPSG
name: RGF93 v2b to NTF (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: rgf93_ntf.gsb
operation_version: ESRI-Fra 1m emulation
description:
Emulation of transformation NTF to RGF93 v2b (1), code 9889. Note that grid file parameters are of opposite sign. Parameter file is from RGF93 v1 to NTF (code 15958), assuming that RGF93 v1 is equivalent to RGF93 v2b within the accuracy of the CT.


auth_name: EPSG
name: JGD2000 to WGS 84 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: touhokutaiheiyouoki2011.gsb
operation_version: IOGP-Jpn N Honshu
description:
Parameter file from JGD2000 to JGD2011 (1) (code 6713) assuming that JGD2011 is equivalent to WGS 84 within the accuracy of this CT. Use for area affected by the 2011 Tohoku earthquake; for areas outside this extent use JGD2000 to WGS 84 (1) (code 1826).


auth_name: EPSG
name: Genoa 1942 height to EVRF2019 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (asc)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: it_2019z.asc
interpolation_crs_auth_name: EPSG
operation_version: EuG-Ita 2019z 2020-09
description:
Determined at 26 points, SD 0.062m. Offset: mean -0.285m, minimum -0.441m, maximum -0.194m. The extent corresponds to the area in Italy containing benchmarks with EVRF heights.


auth_name: EPSG
name: ETRS89 to Ostend height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: hBG18.dat
operation_version: NGI-Bel 2018
description:
Based on gravimetric quasi-geoid NLGEO2018 fitted to 3707 benchmarks of the Ostend height leveling network. SD of 1 cm. In use from 2018-08-01. For reversible alternative to this transformation see ETRS89 to ETRS89 + Ostend height (1) (code 9909).


auth_name: EPSG
name: MGI to ETRS89 (8)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: AT_GIS_GRID_2021_09_28.gsb
operation_version: BEV-Aut NTv2 2021
description:
Replaces GIS-Grid (2010) (CT 5891). Not to be used for cadastral purposes because it does not comply with the rules for control network tie-in as per Paragraph 3 of the Land Survey Regulations (Vermessungsverordnung) 2010.


auth_name: EPSG
name: ETRS89 to BI height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM15-Ire)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSGM15_Belfast.gri
operation_version: OS-UK NI 2015
description:
Parameter file taken from ETRS89 to Belfast height (2). Belfast is a member of the BI ensemble. For reversible alternative to this transformation see ETRS89 to ETRS89 + BI height (2) (code 9917).


auth_name: EPSG
name: ETRS89 to BI height (3)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (OSGM15-Ire)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: OSGM15_Malin.gri
operation_version: OS-Ire 2015
description:
Parameter file taken from ETRS89 to Malin Head height (2). Malin Head is a member of the BI ensemble. For reversible alternative to this transformation see ETRS89 to ETRS89 + BI height (3) (code 9919).


auth_name: EPSG
name: Genoa 1942 height to EVRF2019 mean-tide height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (asc)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: it_2019m.asc
interpolation_crs_auth_name: EPSG
operation_version: EuG-Ita 2019m 2020-09
description:
Determined at 26 points, SD 0.054m. Offset: mean -0.328m, minimum -0.469m, maximum -0.249m. The extent corresponds to the area in Italy containing benchmarks with EVRF heights.


auth_name: EPSG
name: ETRS89 to DHHN2016 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GCG2016.txt
operation_version: BKG-Deu 2016
description:
Better model accuracy (approx. 1 cm in the lowlands, approx. 2 cm in the high mountains and 2 - 6 cm offshore) if applied to ETRS89/DREF91/2016 (CT code 10294). For reversible alternative to this CT see ETRS89 to ETRS89 + DHHN2016 height (1) (code 9926).


auth_name: EPSG
name: ETRS89 to ETRS89 + DHHN2016 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GCG2016.txt
interpolation_crs_auth_name: EPSG
operation_version: BKG-Deu 2016
description:
Reversible alternative to ETRS89 to DHHN2016 height (1) (code 9925). Geoid model accuracy approx. 1 cm in the lowlands, approx. 2 cm in the high mountains and 2 - 6 cm offshore when applied to ETRS89/DREF91/2016 but no better than 0.1m when ETRS89 used.


auth_name: EPSG
name: ETRS89 to EBBWV14-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-EBBWV14-IRF.gsb
operation_version: NR-Gbr EBBWV14 OSNet2009
description:
In conjunction with EBBWV14-TM map projection (code 9942) applied to EBBWV14-IRF (code 9939), emulates the EBBWV14 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines EBBWV14-IRF hence is errorless.						


auth_name: EPSG
name: ISN93 to ISH2004 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Icegeoid_ISN93.gri
operation_version: NMI-Isl
description:
File is also available in NOAA VDatum format (Icegeoid_ISN93.gtx). For reversible alternative to this transformation see ISN93 to ISN93 + ISH2004 height (1) (CT code 9955). Replaced by Icegeoid_ISN2004 (CT code 9956).


auth_name: EPSG
name: ISN93 to ISN93 + ISH2004 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Icegeoid_ISN93.gri
interpolation_crs_auth_name: EPSG
operation_version: NMI-Isl
description:
Reversible alternative to ISN93 to ISH2004 height (1) (code 9954). File is also available in NOAA VDatum format (Icegeoid_ISN93.gtx). Replaced by Icegeoid_ISN2004.


auth_name: EPSG
name: ISN2004 to ISH2004 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Icegeoid_ISN2004.gri
operation_version: NMI-Isl
description:
File also available in NOAA VDatum format (Icegeoid_ISN2004.gtx). For reversible alternative to this transformation see ISN2004 to ISN2004 + ISH2004 height (1) (CT code 9957). Replaces Icegeoid_ISN93 (code 9954). Replaced by Icegeoid_ISN2016 (code 9958).


auth_name: EPSG
name: ISN2004 to ISN2004 + ISH2004 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Icegeoid_ISN2004.gri
interpolation_crs_auth_name: EPSG
operation_version: NMI-Isl
description:
Reversible alternative to ISN2004 to ISH2004 height (1) (CT code 9956). File is also available in NOAA VDatum format (Icegeoid_ISN2004.gtx). Replaces Icegeoid_ISN93, replaced by Icegeoid_ISN2016.


auth_name: EPSG
name: ISN2016 to ISH2004 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Icegeoid_ISN2016.gri
operation_version: NMI-Isl
description:
File also available in NOAA VDatum format (Icegeoid_ISN2016.gtx). For reversible alternative to this transformation see ISN2016 to ISN2016 + ISH2004 height (1) (CT code 9959). Replaces Icegeoid_ISN2004 (code 9956).


auth_name: EPSG
name: ISN2016 to ISN2016 + ISH2004 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Icegeoid_ISN2016.gri
interpolation_crs_auth_name: EPSG
operation_version: NMI-Isl
description:
Reversible alternative to ISN2016 to ISH2004 height (1) (CT code 9958). File is also available in NOAA VDatum format (Icegeoid_ISN2016.gtx). Replaces Icegeoid_ISN2004.


auth_name: EPSG
name: ETRS89 to HULLEE13-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-HULLEE13-IRF.gsb
operation_version: NR-Gbr HULLEE OSNet2009
description:
In conjunction with the HULLEE13-TM map projection (code 9966) applied to HULLEE13-IRF (code 9964), emulates the HULLEE13 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines HULLEE13-IRF hence is errorless.						


auth_name: EPSG
name: ETRS89 to SCM22-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-SCM22-IRF.gsb
operation_version: NR-Gbr SCM22 OSNet2009
description:
In conjunction with the SCM22-TM map projection (code 9971) applied to SCM22-IRF (code 9969), emulates the SCM22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines SCM22-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to FNL22-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-FNL22-IRF.gsb
operation_version: NR-Gbr FNL22 OSNet2009
description:
In conjunction with the FNL22-TM map projection (code 9976) applied to FNL22-IRF (code 9974), emulates the FNL22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines FNL22-IRF hence is errorless.						


auth_name: EPSG
name: SIRGAS 2000 to SIRGAS-CON SIR17P01 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: SIRGAS2000-to-SIRGAS-CONSIR17P01.gsb
operation_version: SIR-SAm 2021
description:
Derived at 79 stations at epoch 2015.00. Accuracy deteriorates with time due to intra-plate seismic deformation.


auth_name: EPSG
name: NAD83(CSRS)v3 to CGVD28 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HT2_1997.byn
operation_version: NRC-Can CGG2000
description:
Hybrid geoid derived from CGG2000 gravimetric geoid fitted to 1926 benchmarks with CGVD28 and NAD83(CSRS)v3 heights valid at epoch 1997.0. In 2019, file renamed from "HT2_0.byn"; no change to file contents.  It is also used as CT to CGVD28(v2.0) height.


auth_name: EPSG
name: NAD83(CSRS)v2 to CGVD28 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HT2_1997.byn
operation_version: NRC-Can CGG2000 1997
description:
Hybrid geoid model valid at epoch 1997.0. Provisional grid derived through NAD83(CSRS98) (= NAD83(CSRS)v2) used HT1 software. This grid is an update derived through NAD83(CSRS)v3. It is used in HT2 software. It is also used as CT to CGVD28(v2.0) height.


auth_name: EPSG
name: NAD83(CSRS)v4 to CGVD28 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HT2_2002v70.byn
operation_version: NRC-Can CGG2000 2002
description:
Hybrid geoid model valid at epoch 2002.0. Derived at epoch 1997.0 through NAD83(CSRS)v3 and modified to include correction derived from the Canada velocity grid v7 for propagation of height between 1997 and 2002. Also used as CT to CGVD28(v2.0) height.


auth_name: EPSG
name: NAD83(CSRS)v6 to CGVD28 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HT2_2010v70.byn
operation_version: NRC-Can CGG2000 2010
description:
Hybrid geoid model valid at epoch 2010.0. Derived at epoch 1997.0 through NAD83(CSRS)v3 and modified to include correction derived from the Canada velocity grid v7 for propagation of height between 1997 and 2010. Also used as CT to CGVD28(v2.0) height.


auth_name: EPSG
name: RGF93 v1 to NGF-IGN69 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggf97a.txt
operation_version: IGN Fra
description:
May be used for transformations from WGS 84 to NGF-IGN69 height. Accuracy at each 0.1 deg x 0.1 degree grid node is given within the geoid model file.


auth_name: EPSG
name: ETRS89 to NGF-IGN69 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggf97a.txt
operation_version: IGN Fra
description:
Parameter values taken from RGF93 v1 to NGF-IGN69 height (1) (code 10000) assuming that RGF93 v1 is equivalent to ETRS89 within the accuracy of the transformation. Accuracy at each 0.1 deg x 0.1 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RGF93 v1 to NGF-IGN78 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggf97a_corse.txt
operation_version: IGN Fra Cor
description:
May be used for transformations from WGS 84 to NGF-IGN78 height. Accuracy at each 0.1 deg x 0.1 degree grid node is given within the geoid model file.


auth_name: EPSG
name: ETRS89 to NGF-IGN78 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggf97a_corse.txt
operation_version: IGN Fra Cor
description:
Parameter values taken from RGF93 v1 to NGF-IGN78 height (1) (code 10002) assuming that RGF93 v1 is equivalent to ETRS89 within the accuracy of the transformation. Accuracy at each 0.1 deg x 0.1 degree grid node is given within the geoid model file.


auth_name: EPSG
name: RGFG95 to NGG1977 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggguy00.txt
operation_version: IGN Guf
description:
May be used for transformations from WGS 84 to NGG1977. Accuracy at each 0.025 deg x 0.025 degree grid node is given within the geoid model file. For reversible alternative to this transformation see RGFG95 to RGFG95 + NGG1977 height (1) (code 9630).


auth_name: EPSG
name: RGR92 to Reunion 1989 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN1997)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ggr99.txt
operation_version: IGN Reu
description:
May be used for transformations from WGS 84 to IGN 1989. Accuracy at each 0.02 deg x 0.02 degree grid node is given within the geoid model file.


auth_name: EPSG
name: NAD83 to NAVD88 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: g2003u01.bin
operation_version: NGS-US Conus NW
description:
Uses Geoid03 hybrid model. See information source for further information. Note: Source CRS is 2D, used in this application of the method as a pseudo-3D CRS.


auth_name: EPSG
name: WGS 84 to EGM96 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: WW15MGH.GRD
operation_version: NGA-World 15min
description:
Grid spacing is 15 arc-minutes. Replaces WGS 84 to EGM84 height (1) (CT 15781). Replaced by WGS 84 to EGM2008 height (1) and (2) (CTs 3858-59). For reversible alternative see WGS 84 to WGS 84 + EGM96 height (1) (CT 9708). An executable using spherical harmonics is also available from the NGA site.


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to SVD2006 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: arcgp-2006-sk.bin
operation_version: NMA-Sjm SV 2006
description:
For reversible alternative see ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + SVD2006 height (1) (code 10107).


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + SVD2006 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: arcgp-2006-sk.bin
interpolation_crs_auth_name: EPSG
operation_version: NMA-Sjm SV 2006
description:
Reversible alternative to ETRS89-NOR [EUREF89] to SVD2006 height (1) (code 10106). The interpolation CRS is EUREF89 but using any realization of ETRS89 including ensemble-based EPSG:4258 is adequate for grid interpolation.


auth_name: EPSG
name: ETRS89 to MWC18-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-MWC18-IRF.gsb
operation_version: NR-Gbr MWC18 OSNet2009
description:
In conjunction with the MWC18-TM map projection (code 10127) applied to MWC18-IRF (code 20033), emulates the MWC18 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines MWC18-IRF hence is errorless.						


auth_name: EPSG
name: NAD83(CSRS)v4 to CGVD2013a(2002) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CGG2013an83.byn
operation_version: NR-Can CGG2013a 2002
description:
Defines CGVD2013a(2002) height. For reversible alternative see NAD83(CSRS)v4 to NAD83(CSRS)v4 + CGVD2013a(2002) height (1) (code 10128).


auth_name: EPSG
name: NAD83(CSRS)v3 to CGVD2013a(1997) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CGG2013an83.byn
operation_version: NR-Can CGG2013a 1997
description:
Defines CGVD2013a(1997) height. For reversible alternative see NAD83(CSRS)v3 to NAD83(CSRS)v3 + CGVD2013a(1997) height (1) (code 10129).


auth_name: EPSG
name: CGVD28 height to CGVD2013a(1997) height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: HT2_1997_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 1997
description:
Equivalent to HT2_1997 hybrid geoid model minus CGG2013a geoid model (i.e. CT code 9983 minus CT 10111 = CT 9984 minus CT 10112). Specifies NAD83(CSRS)v3 as interpolation CRS, but NAD83(CSRS)v2 (code 8237) may equally be used.


auth_name: EPSG
name: CGVD28 height to CGVD2013a(2002) height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: HT2_2002v70_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 2002
description:
Equivalent to HT2_2002v70 hybrid geoid model minus CGG2013a geoid model (i.e. CT code 9985 minus CT 10110).


auth_name: EPSG
name: CGVD28 height to CGVD2013a(2010) height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: HT2_2010v70_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 2010
description:
Equivalent to HT2_2010v70 hybrid geoid model minus CGG2013a geoid model (i.e. CT code 9986 minus CT 9247 = CT 9987 minus CT 10109). Specifies NAD83(CSRS)v6 as interpolation CRS, but NAD83(CSRS)v7 (code 8255) may equally be used.


auth_name: EPSG
name: CGVD2013a(2010) height to CGVD2013a(2002) height (1)
method_auth_name: EPSG
method_name: Vertical Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: EPSG-Can
description:
Interpolation CRS = NAD83(CSRS) 2010, i.e. may be any one of NAD83(CSRS)v6, v7 or v8 (CRS codes 8252, 8255 or 10414). Equivalent to CGVD28 to CGVD2013a(2002) minus CGVD28 to CGVD2013a(2010) (i.e. CT code 10114 minus CT 10115).


auth_name: EPSG
name: CGVD2013a(2010) height to CGVD2013a(1997) height (1)
method_auth_name: EPSG
method_name: Vertical Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: EPSG-Can
description:
Interpolation CRS = NAD83(CSRS) 2010, i.e. may be any one of NAD83(CSRS)v6, v7 or v8 (CRS codes 8252, 8255 or 10414). Equivalent to CGVD28 to CGVD2013a(1997) minus CGVD28 to CGVD2013a(2010) (i.e. CT code 10113 minus CT 10115).


auth_name: EPSG
name: CGVD2013a(2002) height to CGVD2013a(1997) height (1)
method_auth_name: EPSG
method_name: Vertical Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: EPSG-Can
description:
Equivalent to CGVD28 to CGVD2013a(1997) minus CGVD28 to CGVD2013a(2002) (i.e. CT code 10113 minus CT 10114).


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to CD Norway depth (2)
method_auth_name: EPSG
method_name: Geographic3D to Depth (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ChartDatum_above_Ellipsoid_EUREF89_v2021b.bin
operation_version: SK-Nor 2021b
description:
Replaces model "CD Norway 2021" (also referred to as model "CD Norway 2021a") (code 9884). Replaced by model "CD Norway 2023a" (code 10504). For reversible alternative to this transformation see ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (2) (code 10133).


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ChartDatum_above_Ellipsoid_EUREF89_v2021b.bin
interpolation_crs_auth_name: EPSG
operation_version: SK-Nor 2021b
description:
Reversible alternative to ETRS89-NOR [EUREF89] to CD Norway depth (2) (code 10130). Replaces ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (1) (code 9885). Replaced by ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (3) (code 10505). The interpolation CRS is EUREF89 but using any realization of ETRS89 including ensemble-based EPSG:4258 is adequate for grid interpolation.


auth_name: EPSG
name: SRGI2013 to INAGeoid2020 v2 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: INAGEOID2020v2.gtx
operation_version: BIG-Idn INAGeoid20 v2
description:
Defines INAGeoid2020 v2 reference surface and as such is considered to be errorless. Internal accuracy is between 0.05 and 0.3m on the large islands of Indonesia. Replaces INAGeoid2020 v1 (CT code 9305).


auth_name: EPSG
name: ETRS89 to ETRS89 + MSL UK & Ireland VORF08 depth (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: VORF-UK08_ETRF_to_MSL.vrf
interpolation_crs_auth_name: EPSG
operation_version: UKHO-VORF08
description:
Reversible alternative to ETRS89 to MSL UK & Ireland VORF08 depth (1) (code 10154). VORF08 usually delivered in tiles covering 2° by 2° or less. Transformation accuracy at 2-sigma is 0.20 metres (inshore) and 0.30 metres (offshore).


auth_name: EPSG
name: ETRS89 to ETRS89 + CD UK & Ireland VORF08 depth (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: VORF-UK08_ETRF_to_CD.vrf
interpolation_crs_auth_name: EPSG
operation_version: UKHO-VORF08
description:
Reversible alternative to ETRS89 to CD UK & Ireland VORF08 depth (1) (code 10155). VORF08 usually delivered in tiles covering 2° by 2° or less. Transformation accuracy at 2-sigma is 0.20 metres (inshore) and 0.30 metres (offshore).


auth_name: EPSG
name: ETRS89 to MSL UK & Ireland VORF08 depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: VORF-UK08_ETRF_to_MSL.vrf
operation_version: UKHO-VORF08
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + MSL UK & Ireland VORF08 depth (1) (code 10152).


auth_name: EPSG
name: ETRS89 to CD UK & Ireland VORF08 depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: VORF-UK08_ETRF_to_CD.vrf
operation_version: UKHO-VORF08
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + CD UK & Ireland VORF08 depth (1) (code 10153).


auth_name: EPSG
name: ETRS89 to S34J-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: s34j_2022.gsb
operation_version: SDFI-Den Jy 2022
description:
In conjunction with the S34-reconstruction map projection (code 10159) applied to S34J-IRF (code 10158), enables transformation of coordinates between the historic CRS S34J and ETRS89. File is also available in GeoTIFF format (s34j_2022.tif).


auth_name: EPSG
name: ETRS89 to DoPw22-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-DoPw22-IRF.gsb
operation_version: NR-Gbr DoPw22 OSNet2009
description:
In conjunction with DoPw22-TM map projection (code 10182) applied to DoPw22-IRF (code 10175), emulates the DoPw22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines DoPw22-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to ShAb07-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-ShAb07-IRF.gsb
operation_version: NR-Gbr ShAb07 OSNet2009
description:
In conjunction with the ShAb07-TM map projection (code 10187) applied to ShAb07-IRF (code 10185), emulates the ShAb07 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines ShAb07-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to CNH22-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-CNH22-IRF.gsb
operation_version: NR-Gbr CNH22 OSNet2009
description:
In conjunction with the CNH22-LCC map projection (code 10193) applied to CNH22-IRF (code 10191), emulates the CNH22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines CNH22-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to CWS13-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-CWS13-IRF.gsb
operation_version: NR-Gbr CWS13 OSNet2009
description:
In conjunction with the CWS13-TM map projection (code 10198) applied to CWS13-IRF (code 10196), emulates the CWS13 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines CWS13-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to DIBA15-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-DIBA15-IRF.gsb
operation_version: NR-Gbr DIBA15 OSNet2009
description:
In conjunction with the DIBA15-TM map projection (code 10206) applied to DIBA15-IRF (code 10204), emulates the DIBA15 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines DIBA15-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to GWPBS22-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-GWPBS22-IRF.gsb
operation_version: NR-Gbr GWPBS22 OSNet2009
description:
In conjunction with the GW22-LCC map projection (code 10211) applied to GWPBS22-IRF (code 10209), emulates the GWPBS22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines GWPBS22-IRF hence is errorless.						


auth_name: EPSG
name: ETRS89 to GWWAB22-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-GWWAB22-IRF.gsb
operation_version: NR-Gbr GWWAB22 OSNet2009
description:
In conjunction with the GW22-LCC map projection (code 10211) applied to GWWAB22-IRF (code 10214), emulates the GWWAB22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines GWWAB22-IRF hence is errorless.						


auth_name: EPSG
name: ETRS89 to GWWWA22-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-GWWWA22-IRF.gsb
operation_version: NR-Gbr GWWWA22 OSNet2009
description:
In conjunction with the GW22-LCC map projection (code 10211) applied to GWWWA22-IRF (code 10219), emulates the GWWWA22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines GWWWA22-IRF hence is errorless.						


auth_name: EPSG
name: ETRS89 to MALS09-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-MALS09-IRF.gsb
operation_version: NR-Gbr MALS09 OSNet2009
description:
In conjunction with MALS09-TM map projection (code 10226) applied to MALS09-IRF (code 10224), emulates the MALS09 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines MALS09-IRF hence is errorless.						


auth_name: EPSG
name: ETRS89 to OxWo08-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-OxWo08-IRF.gsb
operation_version: NR-Gbr OxWo08 OSNet2009
description:
In conjunction with the OxWo08-TM map projection (code 10234) applied to OxWo08-IRF (code 10229), emulates the OxWo08 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines OxWo08-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to SYC20-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-SYC20-IRF.gsb
operation_version: NR-Gbr SYC20 OSNet2009
description:
In conjunction with the SYC20-TM map projection (code 10239) applied to SYC20-IRF (code 10237), emulates the SYC20 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines SYC20-IRF hence is errorless.						


auth_name: EPSG
name: Slovenia 1996 to SVS2010 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (ISG)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
operation_version: SMA-Svn VRP2016/Koper
description:
Hybrid geoid fitted to 66 levelling benchmarks. File also available in Gravsoft format (SLOVRP2016-Koper.gri). For reversible alternative to this transformation see Slovenia 1996 to Slovenia 1996 + SVS2010 height (1) (CT code 10248).

grid_name:
https://isgeoid.polimi.it/Geoid/Europe/Slovenia/public/Slovenia_2016_SLO_VRP2016_Koper_hybrQ_20221122.isg


auth_name: EPSG
name: Slovenia 1996 to Slovenia 1996 + SVS2010 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (ISG)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
interpolation_crs_auth_name: EPSG
operation_version: SMA-Svn VRP2016/Koper
description:
Reversible alternative to Slovenia 1996 to SVS2010 height (1) (CT code 10247). Hybrid geoid fitted at 66 levelling benchmarks. File is also available in Gravsoft format (SLOVRP2016-Koper.gri).

grid_name:
https://isgeoid.polimi.it/Geoid/Europe/Slovenia/public/Slovenia_2016_SLO_VRP2016_Koper_hybrQ_20221122.isg


auth_name: EPSG
name: ETRS89 to S34S-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: s34s_2022.gsb
operation_version: SDFI-Den Sj 2022
description:
In conjunction with the S34-reconstruction map projection (code 10159) applied to S34S-IRF (code 10249), enables transformation of coordinates between the historic CRS S34S and ETRS89. File is also available in GeoTIFF format (s34s_2022.tif).


auth_name: EPSG
name: ETRS89 to S45B-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: s45b_2022.gsb
operation_version: SDFI-Den 2022
description:
In conjunction with the S45B-reconstruction map projection (code 10253) applied to S45B-IRF (code 10252), enables transformation of coordinates between the historic CRS S45 and ETRS89. File is also available in GeoTIFF format (s45b_2022.tif).


auth_name: EPSG
name: ETRS89 to GS-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: gs_2022.gsb
operation_version: SDFI-Den 2022
description:
In conjunction with the GS LCC map projection (code 10257) applied to GS-IRF (code 10256), enables transformation of coordinates between the historic Generalstabens System and ETRS89. File is also available in GeoTIFF format (gs_2022.tif).


auth_name: EPSG
name: ETRS89 to GSB-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: gsb_2022.gsb
operation_version: SDFI-Den 2022
description:
In conjunction with the GSB-reconstruction projection (code 10261) applied to GSB-IRF (code 10260), enables transformation of coordinates between the historic Generalstaben in Bornholm and ETRS89. File is also available in GeoTIFF format (gsb_2022.tif).


auth_name: EPSG
name: ETRS89 to KK-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: kk_2022.gsb
operation_version: SDFI-Den 2022
description:
In conjunction with the GS LCC map projection (code 10257) applied to KK-IRF (code 10265), enables transformation of coordinates between the historic Copenhagen Commune system and ETRS89. File is also available in GeoTIFF format (kk_2022.tif).


auth_name: EPSG
name: ETRS89 to Ostenfeld-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: os_2022.gsb
operation_version: SDFI-Den 2022
description:
In conjunction with the Ostenfeld-reconstruction map projection (code 10269) applied to OS-IRF (code 10268), enables transformation of coordinates between the historic Ostenfeld CRS and ETRS89. File is also available in GeoTIFF format (os_2022.tif).


auth_name: EPSG
name: ETRS89 to SMITB20-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-SMITB20-IRF.gsb
operation_version: NR-Gbr SMITB20 OSNet2009
description:
In conjunction with the SMITB20-TM map projection (code 10274) applied to SMITB20-IRF (code 10272), emulates the SMITB20 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines SMITB20-IRF hence is errorless.


auth_name: EPSG
name: ETRS89 to RBEPP12-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-RBEPP12-IRF.gsb
operation_version: NR-Gbr RBEPP12 OSNet2009
description:
In conjunction with the RBEPP12-LCC map projection (code 10279) applied to RBEPP12-IRF (code 10277), emulates the RBEPP12 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines RBEPP12-IRF hence is errorless.


auth_name: EPSG
name: ETRS89/DREF91/2016 to DHHN2016 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GCG2016.txt
operation_version: AdV-Deu 2016
description:
Accuracy approx. 1 cm in the lowlands, approx. 2 cm in the high mountains and 2 - 6 cm offshore. For reversible alternative to this transformation see ETRS89/DREF91/2016 to ETRS89/DREF91/2016 + DHHN2016 height (1) (code 10295).


auth_name: EPSG
name: ETRS89/DREF91/2016 to ETRS89/DREF91/2016 + DHHN2016 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GCG2016.txt
interpolation_crs_auth_name: EPSG
operation_version: AdV-Deu 2016
description:
Reversible alternative to ETRS89/DREF91/2016 to DHHN2016 height (1) (code 10294). Accuracy approx. 1 cm in the lowlands, approx. 2 cm in the high mountains and 2 - 6 cm offshore.


auth_name: EPSG
name: RGNC15 to NGNC08 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RANC15.tac
operation_version: BGN-Ncl RANC15
description:
Geoid model RANC15 realizes NGNC08 height (CRS code 9351) to a precision of 2-5cm. Replaces RANC08. For reversible alternative to this transformation see RGNC15 (lon-lat) to RGNC15 (lon-lat) + NGNC08 height (1) (code 10320).


auth_name: EPSG
name: RGNC91-93 to RGNC15 (2)
method_auth_name: EPSG
method_name: Geocentric translations (geog2D domain) by grid (IGN)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geocentric translation file
grid_name: gr3dncl08.tac
interpolation_crs_auth_name: EPSG
operation_version: BGN-Ncl 0.1m
description:
Derived at 67 GNSS stations. General accuracy 1 to 1.5cm in planimetry and 2cm in height at epoch 2015.0.


auth_name: EPSG
name: ETRF2000-PL to EVRF2007-PL height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (PL txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Model_quasi-geoidy-PL-geoid2021-PL-EVRF2007-NH.txt
operation_version: GUGiK-Pol geoid21 EVRF07
description:
Replaces 2011 model (CT code 9719) from 2022-04-04. For reversible alternative to this transformation see ETRF2000-PL to ETRF2000-PL + EVRF2007-PL height (2) (code 10348).


auth_name: EPSG
name: ETRF2000-PL to ETRF2000-PL + EVRF2007-PL height (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (PL txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: Model_quasi-geoidy-PL-geoid2021-PL-EVRF2007-NH.txt
interpolation_crs_auth_name: EPSG
operation_version: GUGiK-Pol geoid21 EVRF07
description:
Reversible alternative to ETRF2000-PL to EVRF2007-PL height (2) (code 10347). Replaces 2011 model (CT code 9720) from 2022-04-04.


auth_name: EPSG
name: ETRS89 to LAT NL depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: nllat2018.gtx
operation_version: NSGI-Nld 2018
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + LAT NL depth (1) (code 10351).


auth_name: EPSG
name: ETRS89 to Formentera height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Formentera height (1) (code 10359).


auth_name: EPSG
name: ETRS89 to Alboran height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Alboran height (1) (code 10361).


auth_name: EPSG
name: ETRS89 to Melilla height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (EGM2008)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: EGM08_REDNAP.txt
operation_version: IGN-Esp 2008
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Melilla height (1) (code 10363).


auth_name: EPSG
name: KGD2002 to KVD1964 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: KNGeoid14.gri
operation_version: NGII-Kor 2014
description:
For reversible alternative to this transformation see KGD2002 to KGD2002 + KVD1964 height (1) (code 10367). Replaced by KNGeoid18 (code 10368).


auth_name: EPSG
name: KGD2002 to KGD2002 + KVD1964 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: KNGeoid14.gri
interpolation_crs_auth_name: EPSG
operation_version: NGII-Kor 2014
description:
Reversible alternative to KGD2002 + KVD1964 height (1) (code 10366). Replaced by KNGeoid18 (code 10369).


auth_name: EPSG
name: KGD2002 to KVD1964 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: KNGeoid18.gri
operation_version: NGII-Kor 2018
description:
Replaces KNGeoid14 (code 10366). For reversible alternative to this transformation see KGD2002 to KGD2002 + KVD1964 height (2) (code 10369).


auth_name: EPSG
name: KGD2002 to KGD2002 + KVD1964 height (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: KNGeoid18.gri
interpolation_crs_auth_name: EPSG
operation_version: NGII-Kor 2018
description:
Reversible alternative to KGD2002 to KVD1964 height (2) (code 10368). Replaces KNGeoid14 (code 10367).


auth_name: EPSG
name: NAD83(CSRS)v8 to CGVD2013a(2010) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CGG2013an83.byn
operation_version: NR-Can CGG2013a 2010
description:
Applies same geoid model as NAD83(CSRS)v6 to CGVD2013a(2010) height (1) and  NAD83(CSRS)v6 to CGVD2013a(2010) height (1),  CT codes 9247 and 10109.


auth_name: EPSG
name: ETRS89 to MSL NL depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: nlgeo2018.gtx
operation_version: NSGI-Nld 2018
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + MSL NL depth (1) (code 10467).


auth_name: EPSG
name: ETRS89 to COV23-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-COV23-IRF.gsb
operation_version: CCC-Gbr COV23 OSNet2009
description:
In conjunction with the COV23-TM map projection (code 10470) applied to COV23-IRF (code 10468), emulates the COV23 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines COV23-IRF hence is errorless.						


auth_name: EPSG
name: ETRS89 to DVR90(2002) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dvr90_2002.tif
operation_version: SDFI-Dnk 2002
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + DVR90(2002) height (1) (code 10490).


auth_name: EPSG
name: ETRS89 to DVR90(2013) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dvr90_2013.tif
operation_version: SDFI-Dnk 2013
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + DVR90(2013) height (1) (code 10492).


auth_name: EPSG
name: ETRS89 to DVR90(2023) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dvr90_2023.tif
operation_version: SDFI-Dnk 2023
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + DVR90(2023) height (1) (code 10494).


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to CD Norway depth (3)
method_auth_name: EPSG
method_name: Geographic3D to Depth (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ChartDatum_above_Ellipsoid_EUREF89_v2023a.bin
operation_version: SK-Nor 2023a
description:
Replaces model "CD Norway 2021b" (code 10130). Replaced by model "CD Norway 2023b" (code 10509). For reversible alternative to this transformation see CT code 10505.


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (3)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ChartDatum_above_Ellipsoid_EUREF89_v2023a.bin
interpolation_crs_auth_name: EPSG
operation_version: SK-Nor 2023a
description:
Reversible alternative to ETRS89-NOR [EUREF89] to CD Norway depth (3) (CT code 10504). Replaces ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (2) (model 2021b, CT code 10133). Replaced by ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (4) (model 2023b, CT code 10510). The interpolation CRS is EUREF89 but using any realization of ETRS89 including ensemble-based EPSG:4258 is adequate for grid interpolation.


auth_name: EPSG
name: RGF93 v2b to NGF-IGN78 height (3)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: RAC23.mnt
operation_version: IGN Fra Cor 23
description:
Replaces RAC09 model [RGF93 v2 to NGF-IGN78 height (2) (code 8372)]. Accuracy at each grid node is given in the geoid model file. Bilinear interpolation used. For reversible alternative see RGF93 v2b to RGF93 v2b + NGF-IGN78 height (3) (code 10508).


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to CD Norway depth (4)
method_auth_name: EPSG
method_name: Geographic3D to Depth (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ChartDatum_above_Ellipsoid_EUREF89_v2023b.bin
operation_version: SK-Nor 2023b
description:
Replaces ETRS89-NOR [EUREF89] to CD Norway depth (3) (code 10504). Accompanying file ...v2023b_standarddeviation.bin contains first estimate of SD of model. For reversible alternative to this transformation see ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (2) (code 10510).


auth_name: EPSG
name: ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (4)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: ChartDatum_above_Ellipsoid_EUREF89_v2023b.bin
interpolation_crs_auth_name: EPSG
operation_version: SK-Nor 2023b
description:
Reversible alternative to ETRS89-NOR [EUREF89] to CD Norway depth (4) (code 10509). Accompanying file ...v2023b_standarddeviation.bin contains first estimate of SD of model. Replaces ETRS89-NOR [EUREF89] to ETRS89-NOR [EUREF89] + CD Norway depth (3) (code 10133). The interpolation CRS is EUREF89 but using any realization of ETRS89 including ensemble-based EPSG:4258 is adequate for grid interpolation.


auth_name: EPSG
name: CGVD28 height to CGVD2013a(1997) height (2)
method_auth_name: EPSG
method_name: Vertical change by geoid grid difference (NRCan)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid model difference file
grid_name: HT2_1997_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 1997
description:
Equal to HT2_1997 hybrid geoid model minus CGG2013a geoid model (CT 9983 minus CT 10111). Specified interpolation CRS is NAD83(CSRS)v3, but NAD83(CSRS)v2 or any later realization may be used without error. See also CT 10617 from CGVD28(v2.0) height.


auth_name: EPSG
name: CGVD28 height to CGVD2013a(2002) height (2)
method_auth_name: EPSG
method_name: Vertical change by geoid grid difference (NRCan)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid model difference file
grid_name: HT2_2002v70_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 2002
description:
Equal to HT2_2002v70 hybrid geoid model minus CGG2013a geoid model (CT 9985 minus CT 10110). Specified interpolation CRS is NAD83(CSRS)v4, but NAD83(CSRS)v2 or any later realization may be used without error. See also CT 10618 from CGVD28(v2.0) height.


auth_name: EPSG
name: CGVD28 height to CGVD2013a(2010) height (2)
method_auth_name: EPSG
method_name: Vertical change by geoid grid difference (NRCan)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid model difference file
grid_name: HT2_2010v70_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 2010
description:
Equal to HT2_2010v70 hybrid geoid model minus CGG2013a geoid model (CT 9986 minus CT 9247). Specified interpolation CRS is NAD83(CSRS)v6, but NAD83(CSRS)v2 or any later realization may be used without error. See also CT 10619 from CGVD28(v2.0) height.


auth_name: EPSG
name: NAD83(CSRS)v2 to NAD83(CSRS)v4 (3)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v6VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg60
description:
The v6 velocity grid is not recommended for height transformation north of 60°N due to due to inaccuracies in the vertical component of the velocity model. Replaced by NAD83(CSRS)v2 to NAD83(CSRS)v4 (4) (code 10522).


auth_name: EPSG
name: NAD83(CSRS)v2 to NAD83(CSRS)v4 (4)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg70
description:
Replaces NAD83(CSRS)v2 to NAD83(CSRS)v4 (3) (code 10521). Replaced by NAD83(CSRS)v2 to NAD83(CSRS)v4 (5) (code 10708).


auth_name: EPSG
name: NAD83(CSRS)v2 to NAD83(CSRS)v6 (2)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v6VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg60
description:
The v6 velocity grid is not recommended for height transformation north of 60°N due to due to inaccuracies in the vertical component of the velocity model. Replaced by NAD83(CSRS)v2 to NAD83(CSRS)v6 (3) (code 10524).


auth_name: EPSG
name: NAD83(CSRS)v2 to NAD83(CSRS)v6 (3)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg70
description:
Replaces NAD83(CSRS)v2 to NAD83(CSRS)v6 (2) (code 10523). Replaced by NAD83(CSRS)v2 to NAD83(CSRS)v6 (4) (code 10709).


auth_name: EPSG
name: NAD83(CSRS)v3 to NAD83(CSRS)v4 (2)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v6VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg60
description:
The v6 velocity grid is not recommended for height transformation north of 60°N due to due to inaccuracies in the vertical component of the velocity model. Replaced by NAD83(CSRS)v3 to NAD83(CSRS)v4 (3) (code 10528).


auth_name: EPSG
name: NAD83(CSRS)v3 to NAD83(CSRS)v4 (3)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg70
description:
Replaces NAD83(CSRS)v3 to NAD83(CSRS)v4 (2) (code 10527). Replaced by NAD83(CSRS)v3 to NAD83(CSRS)v4 (4) (code 10712).


auth_name: EPSG
name: NAD83(CSRS)v3 to NAD83(CSRS)v6 (2)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v6VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg60
description:
The v6 velocity grid is not recommended for height transformation north of 60°N due to due to inaccuracies in the vertical component of the velocity model. Replaced by NAD83(CSRS)v3 to NAD83(CSRS)v6 (3) (code 10530).


auth_name: EPSG
name: NAD83(CSRS)v3 to NAD83(CSRS)v6 (3)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg70
description:
Replaces NAD83(CSRS)v3 to NAD83(CSRS)v6 (2) (code 10529). Replaced by NAD83(CSRS)v3 to NAD83(CSRS)v6 (4) (code 10713).


auth_name: EPSG
name: NAD83(CSRS)v4 to NAD83(CSRS)v6 (2)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v6VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg60
description:
The v6 velocity grid is not recommended for height transformation north of 60°N due to due to inaccuracies in the vertical component of the velocity model. Replaced by NAD83(CSRS)v4 to NAD83(CSRS)v6 (3) (code 10537).


auth_name: EPSG
name: NAD83(CSRS)v4 to NAD83(CSRS)v6 (3)
method_auth_name: EPSG
method_name: Geographic3D Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRCan-Can cvg70
description:
Replaces NAD83(CSRS)v4 to NAD83(CSRS)v6 (2) (code 10536). Replaced by NAD83(CSRS)v4 to NAD83(CSRS)v6 (4) (code 10716).


auth_name: EPSG
name: CGVD2013a(1997) height to CGVD2013a(2002) height (2)
method_auth_name: EPSG
method_name: Vertical Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: EPSG-Can
description:
Although interpolation CRS is specified as NAD83(CSRS)v7, NAD83(CSRS)v2 or any later realization may be used without introducing significant error.


auth_name: EPSG
name: CGVD2013a(1997) height to CGVD2013a(2010) height (2)
method_auth_name: EPSG
method_name: Vertical Offset using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v70VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: EPSG-Can
description:
Although interpolation CRS is specified as NAD83(CSRS)v7, NAD83(CSRS)v2 or any later realization may be used without introducing significant error. 


auth_name: EPSG
name: ETRS89 to Cascais height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GeodPT08.dat
operation_version: DGT-Prt 2008
description:
Hybrid geoid model GeodPT08 adjusts ICAGM07 to fit Cascais at the Portuguese Mainland geodetic network. For reversible alternative to this transformation see ETRS89 to ETRS89 + Cascais height (1) (code 10546).


auth_name: EPSG
name: ETRS89 to DKMSL(2022) depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dkmsl_2022.tif
operation_version: SDFI-Dnk 2022
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + DKMSL(2022) depth (1) (code 10558).


auth_name: EPSG
name: ETRS89 to DKLAT(2022) depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dklat_2022.tif
operation_version: SDFI-Dnk 2022
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + DKLAT(2022) depth (1) (code 10560).


auth_name: EPSG
name: ETRS89 to DKMSL(2023) depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dkmsl_2023.tif
operation_version: SDFI-Dnk 2023
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + DKMSL(2023) depth (1) (code 10562). Replaces ETRS89 to DKMSL(2022) depth (1) (code 10557).


auth_name: EPSG
name: ETRS89 to ETRS89 + DKMSL(2023) depth (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dkmsl_2023.tif
interpolation_crs_auth_name: EPSG
operation_version: SDFI-Dnk 2023
description:
Reversible alternative to ETRS89 to DKMSL(2023) depth (1) (code 10561). Replaces ETRS89 to ETRS89 + DKMSL(2022) depth (1) (code 10558).


auth_name: EPSG
name: ETRS89 to DKLAT(2023) depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dklat_2023.tif
operation_version: SDFI-Dnk 2023
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + DKLAT(2023) depth (1) (code 10564). Replaces ETRS89 to DKLAT(2022) depth (1) (code 10559).


auth_name: EPSG
name: ETRS89 to ETRS89 + DKLAT(2023) depth (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: dklat_2023.tif
interpolation_crs_auth_name: EPSG
operation_version: SDFI-Dnk 2023
description:
Reversible alternative to ETRS89 to DKLAT(2023) depth (1) (code 10563). Replaces ETRS89 to ETRS89 + DKLAT(2022) depth (1) (code 10560).


auth_name: EPSG
name: GLLMSL(2022) height to GVR2016 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: gllmsl_2022.tif
interpolation_crs_auth_name: EPSG
operation_version: SDFI-Grl 2022
description:
File format is GeoTIFF grid (.gtg) which is algorithmically equivalent to  the GTX format (see https://proj.org/en/9.3/specifications/geodetictiffgrids.html).


auth_name: EPSG
name: ETRS89 to Baltic 1957 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: CR2005_GTX.gtx
operation_version: cuzk-Cze 2005
description:
For reversible alternative to this transformation see ETRS89 to ETRS89 + Baltic 1957 height (2) (code 10568).


auth_name: EPSG
name: NAD83(CSRS)v2 to CGVD28(HTv2.0) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HT2_1997.byn
operation_version: NRC-Can CGG2000 1997
description:
Hybrid geoid model. Valid at epoch 1997.0. A provisional grid was derived through NAD83(CSRS98) = NAD83(CSRS)v2 and used in HT1 software. This grid is an update used in HT2 software, derived through NAD83(CSRS)v3, CRS code 8239.


auth_name: EPSG
name: NAD83(CSRS)v3 to CGVD28(HTv2.0) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HT2_1997.byn
operation_version: NRC-Can CGG2000
description:
Valid at epoch 1997.0. Hybrid geoid derived from CGG2000 gravimetric geoid fitted to 1926 benchmarks with CGVD28 and NAD83(CSRS)v3 heights. On publication in 2019 of models valid at other epochs, file renamed from "HT2_0.byn"; no change to file contents.


auth_name: EPSG
name: NAD83(CSRS)v4 to CGVD28(HTv2.0) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HT2_2002v70.byn
operation_version: NRC-Can CGG2000 2002
description:
Hybrid geoid model, valid at epoch 2002.0. Grid derived at epoch 1997.0 through NAD83(CSRS)v3 (CRS code 8239) and then modified to include correction derived from the Canada velocity grid v7.0 for propagation of height between 1997.0 and 2002.0.


auth_name: EPSG
name: NAD83(CSRS)v6 to CGVD28(HTv2.0) height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (NRCan byn)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: HT2_2010v70.byn
operation_version: NRC-Can CGG2000 2010
description:
Hybrid geoid model, valid at epoch 2010.0. Grid derived at epoch 1997.0 through NAD83(CSRS)v3 (CRS code 8235) and then modified to include correction for propagation of height between 1997.0 and 2010.0 derived from the Canada velocity grid v7.0.


auth_name: EPSG
name: CGVD28(HTv2.0) height to CGVD2013a(1997) height (1)
method_auth_name: EPSG
method_name: Vertical change by geoid grid difference (NRCan)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid model difference file
grid_name: HT2_1997_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 1997
description:
Equal to HT2_1997 hybrid geoid model minus CGG2013a geoid model (CT 10609 minus CT 10111). Specified interpolation CRS is NAD83(CSRS)v3, but NAD83(CSRS)v2 or any later realization may be used without error. Also used as CT 10518 from CGVD28 height.


auth_name: EPSG
name: CGVD28(HTv2.0) height to CGVD2013a(2002) height (1)
method_auth_name: EPSG
method_name: Vertical change by geoid grid difference (NRCan)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid model difference file
grid_name: HT2_2002v70_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 2002
description:
Equal to HT2_2002v70 hybrid geoid model minus CGG2013a geoid model (CT 10610 minus CT 10110). Specified interpolation CRS is NAD83(CSRS)v4, but NAD83(CSRS)v2 or any later realization may be used without error. Also used as CT 10519 from CGVD28 height.


auth_name: EPSG
name: CGVD28(HTv2.0) height to CGVD2013a(2010) height (1)
method_auth_name: EPSG
method_name: Vertical change by geoid grid difference (NRCan)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid model difference file
grid_name: HT2_2010v70_CGG2013a.byn
interpolation_crs_auth_name: EPSG
operation_version: NR-Can HT2 2010
description:
Equal to HT2_2010v70 hybrid geoid model minus CGG2013a geoid model (CT 10611 minus CT 9247). Specified interpolation CRS is NAD83(CSRS)v6, but NAD83(CSRS)v2 or any later realization may be used without error. Also used as CT 10520 from CGVD28 height.


auth_name: EPSG
name: ETRS89 to ECML14-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-ECML14-IRF.gsb
operation_version: NR-Gbr ECML14 OSNet2009
description:
In conjunction with the ECML14-TM map projection (code 10625) applied to ECML14-IRF (code 10623), emulates the ECML14 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines ECML14-IRF hence is errorless.						


auth_name: EPSG
name: ETRS89 to WC05-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-WC05-IRF.gsb
operation_version: NR-Gbr WC05 OSNet2009
description:
In conjunction with the WC05-TM map projection (code 10631) applied to WC05-IRF (code 10628), emulates the WC05 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines WC05-IRF hence is errorless.						


auth_name: EPSG
name: GR96 to GLMSL(2023) depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: glmsl_2023.tif
operation_version: SDFI-Grl 2023
description:
For reversible alternative to this transformation see GR96 to GR96 + GLMSL(2023) depth (1) (code 10654).


auth_name: EPSG
name: GR96 to GLLAT(2023) depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: gllat_2023.tif
operation_version: SDFI-Grl 2023
description:
For reversible alternative to this transformation see GR96 to GR96 + GLLAT(2023) depth (1) (code 10656).


auth_name: EPSG
name: ETRF2000 to EOMA 1980 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: hu_sgo_vitel2014.tif
operation_version: SGO-Hun geoid14
description:
Used in the official SGO EHT coordinate transformation tool. For access to the grid file see https://www.gnssnet.hu/. Replaces VITEL2009. For reversible alternative to this transformation see ETRF2000 to ETRF2000 + EOMA 1980 height (1) (CT code 10662).


auth_name: EPSG
name: ETRF2000 to ETRF2000 + EOMA 1980 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: hu_sgo_vitel2014.tif
interpolation_crs_auth_name: EPSG
operation_version: SGO-Hun geoid14
description:
Reversible alternative to ETRF2000 to EOMA 1980 height (1) (code 10661). Used in the official SGO EHT coordinate transformation tool. For access to the grid file see https://www.gnssnet.hu/.


auth_name: EPSG
name: HD72 to ETRF2000 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: hu_sgo_hd72corr.gsb
operation_version: LTK-Hun
description:
Used in the official SGO EHT coordinate transformation tool. For access to the grid file see https://www.gnssnet.hu/.


auth_name: EPSG
name: ETRF2000 to EOMA 1980 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: hu_bme_geoid2014.tif
operation_version: BME-Hun geoid14
description:
Emulation to better than 7mm of the official SGO EHT model (CT code 10661). The geoid height values were obtained from the online EHT service. For reversible alternative to this transformation see ETRF2000 to ETRF2000 + EOMA 1980 height (2) (code 10667).


auth_name: EPSG
name: ETRF2000 to ETRF2000 + EOMA 1980 height (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: hu_bme_geoid2014.tif
interpolation_crs_auth_name: EPSG
operation_version: BME-Hun geoid14
description:
Reversible alternative to ETRF2000 to EOMA 1980 height (2) (code 10666). Emulation to better than 7mm of the official SGO EHT transformation (CT code 10662).


auth_name: EPSG
name: HD72 to ETRF2000 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: hu_bme_hd72corr.gsb
operation_version: BME-Hun
description:
Emulation to better than 2mm of the official SGO EHT transformation. ETRF2000 coordinates of the grid nodes were converted to HD72 using the online EHT tool. For cadastral and other legal purposes the official transformation (CT code 10663) must be used.


auth_name: EPSG
name: PD/83 to ETRS89 (2)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: de_tlbg_thuringen_NTv2gridTH.gsb
operation_version: TLBG-Deu Thuringen
description:
Official transformation for the state of Thuringen used in ThuTrans. File also available in GTG format.


auth_name: EPSG
name: ETRS89 to BSCD2000 depth (1)
method_auth_name: EPSG
method_name: Geographic3D to Depth (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: BSCD2000.txt
operation_version: BSHC-Baltic 2023
description:
Defines BSCD2000. See ETRS89 to ETRS89 + BSCD2000 depth (1) (code 10681) for reversible alternative. File also available in gtx and gtg formats.


auth_name: EPSG
name: ETRS89 to ETRS89 + BSCD2000 depth (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+Depth (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: BSCD2000.txt
interpolation_crs_auth_name: EPSG
operation_version: BSHC-Baltic 2023
description:
Reversible alternative to ETRS89 to BSCD2000 depth (1) (code 10680). File also available in gtx and gtg formats.


auth_name: EPSG
name: SVS2000 height to SVS2010 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (asc)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: SLO-VTP2024.xyz
interpolation_crs_auth_name: EPSG
operation_version: GuRS-Svn
description:
SLO-VTP2024 height transformation surface derived at 2116 benchmarks. Height differences vary between −0.240 m and −0.047 m; 1σ accuracy at 8693 BM is 9.9mm. File is also available in Surfer .grd and Gravsoft .gri formats.


auth_name: EPSG
name: EUREF-FIN to N60 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: fi_nls_fin2000.tif
operation_version: NLS-Fin 2000
description:
For reversible alternative see EUREF-FIN to EUREF-FIN + N60 height (1) (code 10694). Derived through a correction surface to the Nordic NKG96 geoid model using 156 points at which both levelled and GPS heights were available. ASCII file format available.


auth_name: EPSG
name: EUREF-FIN to EUREF-FIN + N60 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: fi_nls_fin2000.tif
interpolation_crs_auth_name: EPSG
operation_version: NLS-Fin 2000
description:
Reversible alternative to EUREF-FIN to N60 height (1) (code 10693). File also available in 3 ASCII formats.


auth_name: EPSG
name: EUREF-FIN to N2000 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: fi_nls_fin2005n00.tif
operation_version: NLS-Fin 2005
description:
Replaced by EUREF-FIN to N2000 height (2) (code 10697). For reversible alternative see EUREF-FIN to EUREF-FIN + N2000 height (1) (code 10696). Derived through correction surface to the Nordic NKG2004-geoid model using 50 EUVN points. File also in ASCII.


auth_name: EPSG
name: EUREF-FIN to EUREF-FIN + N2000 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: fi_nls_fin2005n00.tif
interpolation_crs_auth_name: EPSG
operation_version: NLS-Fin 2005
description:
Reversible alternative to EUREF-FIN to N2000 height (1) (code 10695). Replaced by EUREF-FIN to EUREF-FIN + N2000 height (2) (code 10698). File also available in 3 ASCII formats.


auth_name: EPSG
name: EUREF-FIN to N2000 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: fi_nls_fin2023n2000.tif
operation_version: NLS-Fin 2023
description:
Replaces EUREF-FIN to N2000 height (1) (code 10695). For reversible alternative to this transformation see EUREF-FIN to EUREF-FIN + N2000 height (2) (code 10698). File also available in 3 ASCII formats.


auth_name: EPSG
name: EUREF-FIN to EUREF-FIN + N2000 height (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: fi_nls_fin2023n2000.tif
interpolation_crs_auth_name: EPSG
operation_version: NLS-Fin 2023
description:
Replaces EUREF-FIN to EUREF-FIN + N2000 height (1) (code 10696).  Reversible alternative to EUREF-FIN to N2000 height (2) (code 10697). File also available in 3 ASCII formats.


auth_name: EPSG
name: KKJ / Finland Uniform Coordinate System to EUREF-FIN / TM35FIN(E,N) (1)
method_auth_name: EPSG
method_name: Cartesian Grid Offsets by TIN Interpolation (JSON)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: TIN offset file
grid_name: fi_nls_ykj_etrs35fin.json
operation_version: NLS-FIN TINshift
description:
This YKJ to ETRS-TM35FIN TINshift transformation is the recommended method for KKJ to EUREF-FIN coordinate change, to be used in preference to transformation KKJ to EUREF-FIN (2) (code 10098). See concatenated operation 10778.


auth_name: EPSG
name: N60 height to N2000 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by TIN Interpolation (JSON)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: TIN offset file
grid_name: fi_nls_n60_n2000.json
interpolation_crs_auth_name: EPSG
operation_version: NLS-Fin TINshift
description:
Recommended method for N60<>N2000 transformations, as more accurate than concatenating geoid models.


auth_name: EPSG
name: Canada velocity grid v8
method_auth_name: EPSG
method_name: Point motion (geog3D domain) using NEU velocity grid (NTv2_Vel)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NAD83v80VG.gvb
interpolation_crs_auth_name: EPSG
operation_version: NRC-Can cvg8.0
description:
Replaces Canada velocity grid v7 (code 9483). Although the interpolation CRS is given as NAD83(CSRS)v8 (also known as NAD83(CSRS) 2010), any version of NAD83(CSRS) may be used for grid interpolation without significant error.


auth_name: EPSG
name: Bonaire 2004 to Bonaire height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: bongeo2004.gtx
operation_version: NSGI-Bes bongeo2004
description:
Vertical component of official transformation BESTRANS2020. For reversible alternative to this transformation see Bonaire 2004 to Bonaire 2004 + Bonaire height (1) (code 10768).


auth_name: EPSG
name: Bonaire 2004 to Bonaire 2004 + Bonaire height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (gtx)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: bongeo2004.gtx
interpolation_crs_auth_name: EPSG
operation_version: NSGI-Bes bongeo2004
description:
Reversible alternative to Bonaire 2004 to Bonaire height (1) (code 10767). Vertical component of official transformation BESTRANS2020.


auth_name: EPSG
name: KSA-GRF17 to KSA-VRF14 height (2)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: KSA-GEOID21.gra
operation_version: GEOSA-Sau 21
description:
Hybrid geoid, replaces KSA-Geoid17. Accuracy 1.5 cm along levelling lines, 2.5 cm between lines. To access KSA-GEOID21 contact GEOSA at info@geosa.gov.sa. For reversible alternative see code 10776.


auth_name: EPSG
name: KSA-GRF17 to KSA-GRF17 + KSA-VRF14 height (2)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: KSA-GEOID21.gra
interpolation_crs_auth_name: EPSG
operation_version: GEOSA-Sau 21
description:
Reversible alternative to KSA-GRF17 to KSA-VRF14 height (2) (code 10775). Hybrid geoid, replaces KSA-Geoid17. Accuracy 1.5 cm along levelling lines, 2.5 cm between lines. To access KSA-GEOID21 contact GEOSA at info@geosa.gov.sa


auth_name: EPSG
name: NKG land uplift (deformation) model NKG_RF17vel
method_auth_name: EPSG
method_name: Point motion (geocen domain) using NEU velocity grid (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity north grid file
grid_name: NKG_RF17vel_N.GRI
interpolation_crs_auth_name: EPSG
operation_version: NKG_RF17vel
description:
Replaces NKG_RF03vel model. Accuracy estimated as 0.1, 0.1, and 0.4 mm/year for the North, East, and Up components, respectively. Because the difference in coordinates that results from application of the model is small (under a decimetre), although the interpolation CRS is given as ETRF2014 any realization of ETRS89 (including NKG_ETRF14) may be used as the interpolation CRS.


auth_name: EPSG
name: ETRF2014 to NKG_ETRF14 (1)
method_auth_name: EPSG
method_name: Geocentric translations using NEU velocity grid (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Point motion velocity grid file
grid_name: NKG_RF17vel.tif
param1_auth_name: EPSG
param1_name: Target epoch
param1_uom_auth_name: EPSG
interpolation_crs_auth_name: EPSG
operation_version: NKG2020
description:
Nordic Geodetic Commission (NKG) 2020 transformation. Accuracy estimated as 0.1, 0.1, and 0.4 mm/year for the North, East, and Up components, respectively. Because the difference in coordinates between ETRF2014 and NKG_ETRF14 is small (under a decimetre), although the interpolation CRS is given as ETRF2014, any realization of ETRS89 (including NKG_ETRF14) may be used as the interpolation CRS. The source CRS ETRF2014 is a dynamic CRS and the coordinate epoch for the coordinates referenced to it is a user-defined input.


auth_name: EPSG
name: NKG_ETRF14 to ETRS89-NOR [EUREF89] (1)
method_auth_name: EPSG
method_name: Geocen translations by grid (gtg) & Geocen translations NEU velocities (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geocentric translation file
grid_name: no_kv_NKGETRF14_EPSG7922_2000.tif
grid2_param_auth_name: EPSG
grid2_param_name: Point motion velocity grid file
grid2_name: NKG_RF17vel.tif
param1_auth_name: EPSG
param1_name: Source epoch
param1_uom_auth_name: EPSG
param2_auth_name: EPSG
param2_name: Target epoch
param2_uom_auth_name: EPSG
interpolation_crs_auth_name: EPSG
operation_version: NKG2020
description:
Nordic Geodetic Commission (NKG) 2020 transformation. Replaces NKG2008 transformation. Because the difference between coordinates referenced to NKG_ETRF14 and coordinates referenced to ETRS89-NO EUREF89 is small (under a decimetre), although the interpolation CRS is given as NKG_ETRF14 any realization of ETRS89 (including ETRF2014 and ETRS89-NO EUREF89) may be used as the interpolation CRS. Scale difference in ppb where 1/billion = 1E-9.


auth_name: EPSG
name: LKS-92 to Latvia 2000 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: LV'14.gri
operation_version: LGIA-Lva 2014
description:
Published 2014-12-01. For reversible alternative to this transformation see LKS-92 to LKS-92 + Latvia 2000 height (1) (code 10828). File also available in ASCII txt format.


auth_name: EPSG
name: LKS-92 to LKS-92 + Latvia 2000 height (1)
method_auth_name: EPSG
method_name: Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: LV'14.gri
interpolation_crs_auth_name: EPSG
operation_version: LGIA-Lva 2014
description:
Reversible alternative to LKS-92 to Latvia 2000 height (1) (code 10827). File also available in ASCII txt format.


auth_name: EPSG
name: LKS-92 to LKS-2020 (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: LKS92to2020NTv2.gsb
operation_version: LGIA-Lva
description:
Accuracy of transformation is at 1 cm level one sigma. Care! The NTv2 format requires longitudes to be positive west. At a given point, LKS-2020 latitude (positive north) has a greater value than LKS-92 latitude and LKS-2020 longitude (positive east) has a lesser value than LKS-92 longitude. For point Odukalns: 56.8283960°N, 24.2727688°E (LKS-92) = 56.8283967°N, 24.2727679°E (LKS-2020).


auth_name: EPSG
name: RGAF09 to IGN 1988 SM height (3)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (IGN2009)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: GG23SM.tac
operation_version: IGN Glp StM 2023
description:
Replaces RGAF09 to IGN 1988 SM height (2), transformation code 9188. For reversible alternative to this transformation see RGAF09 to RGAF09 + IGN 1988 SM height (3) (code 10887).


auth_name: EPSG
name: ETRS89 to EWR3-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-EWR3-IRF.gsb
operation_version: NR-Gbr EWR3 OSNet2009
description:
In conjunction with the EWR3-TM map projection (code 9765) applied to EWR3-IRF (code 10849), emulates the EWR3 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009 CORS) defines EWR3-IRF hence is errorless. In 2024 the EWR2 Grid (ETRS89 / EWR2 SnakeGrid) was extended eastwards as the EWR3 Grid (ETRS89 / EWR3 SnakeGrid). To the west of Bedford the EWR2 Grid is an exact subset of the EWR3 Grid; over this extent the EWR3 Grid replaces the EWR2 Grid. The EWR2 emulation file TN15-ETRS89-to-EWR2-IRF.gsb (CT code 9764) is a subset of this EWR3 emulation file TN15-ETRS89-to-EWR3-IRF.gsb; west of Bedford the content of the two files is identical.


auth_name: EPSG
name: DVR90 height to EVRF2019 height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: dvr90_evrf2019.tif
interpolation_crs_auth_name: EPSG
operation_version: KDS-Dnk 2019z
description:
Determined at 106 points, SD 0.006m. Offset: mean 0.005m, minimum -0.010m, maximum 0.017m. The transformation was derived using the levelling based DVR90(2000) (CRS code 10482), but is applicable to all realizations in the DVR90 ensemble.


auth_name: EPSG
name: DVR90 height to EVRF2019 mean-tide height (1)
method_auth_name: EPSG
method_name: Vertical Offset by Grid Interpolation (gtg)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Vertical offset file
grid_name: dvr90_evrf2019_mean_tide.tif
interpolation_crs_auth_name: EPSG
operation_version: KDS-Dnk 2019m
description:
Determined at 106 points, SD 0.009m. Offset: mean 0.022m, minimum 0.003m, maximum 0.043m. The transformation was derived using the levelling based DVR90(2000) (CRS code 10482), but is applicable to all realizations in the DVR90 ensemble.


auth_name: EPSG
name: ETRS89 to WSPG-IRF (1)
method_auth_name: EPSG
method_name: NTv2
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Latitude and longitude difference file
grid_name: TN15-ETRS89-to-WSPG-IRF.gsb
operation_version: AA-Gbr WSPG OSNet2009
description:
In conjunction with the WSPG-TM map projection (code 10862) applied to WSPG-IRF (code 10860), emulates the WSPG Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines WSPG-IRF hence is errorless.


auth_name: EPSG
name: CGRS93 to Famagusta 1960 height (1)
method_auth_name: EPSG
method_name: Geographic3D to GravityRelatedHeight (txt)
source_crs_auth_name: EPSG
target_crs_auth_name: EPSG
grid_param_auth_name: EPSG
grid_param_name: Geoid (height correction) model file
grid_name: SEPARATION.TXT
operation_version: DLS-Cyp 2010
description:
Hybrid geoid model derived in 2010 using least squares collocation. The Cyprus Geoid Model describes the official vertical reference in Cyprus. For reversible alternative to this transformation see CGRS93 to CGRS93 + Famagusta 1960 height (1) (code 10867).


