From 87a34cbf12abd4b09b9c15615b27e37b81637072 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Tue, 12 Nov 2019 00:15:09 +0100
Subject: Database: update to EPSG v9.8.4

---
 data/sql/grid_transformation.sql | 60 ++++++++++++++++++++++++----------------
 1 file changed, 36 insertions(+), 24 deletions(-)

(limited to 'data/sql/grid_transformation.sql')

diff --git a/data/sql/grid_transformation.sql b/data/sql/grid_transformation.sql
index 486be372..7a3689c6 100644
--- a/data/sql/grid_transformation.sql
+++ b/data/sql/grid_transformation.sql
@@ -74,21 +74,21 @@ INSERT INTO "grid_transformation" VALUES('EPSG','1600','NAD27 to NAD83(CSRS98) (
 INSERT INTO "grid_transformation" VALUES('EPSG','1601','NAD83 to NAD83(CSRS98) (2)','Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1697.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','4140','EPSG','2375',NULL,'EPSG','8656','Latitude and longitude difference file','SK83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SK PMC-Can SK',1);
 INSERT INTO "grid_transformation" VALUES('EPSG','1602','NAD83 to NAD83(CSRS98) (3)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4267','EPSG','4140','EPSG','2376',NULL,'EPSG','8656','Latitude and longitude difference file','AB_CSRS.DAC',NULL,NULL,NULL,NULL,NULL,NULL,'AB Env-Can AB',1);
 INSERT INTO "grid_transformation" VALUES('EPSG','1670','NZGD49 to WGS 84 (3)','Parameter file is from NZGD49 to NZGD2000 (3) (code 1568) and assumes WGS 84 is coincident with NZGD2000 to the accuracy of the transformation.','Accuracy about 1m.','EPSG','9615','NTv2','EPSG','4272','EPSG','4326','EPSG','3285',1.0,'EPSG','8656','Latitude and longitude difference file','nzgd2kgrid0005.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Nzl 1m',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1688','ATS77 to WGS 84 (1)','Parameter file is from ATS77 to NAD83(CSRS) (1) (code 1841) assuming that NAD83(CSRS) is equivalent to WGS 84 within the accuracy of the transformation.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4122','EPSG','4326','EPSG','1447',1.0,'EPSG','8656','Latitude and longitude difference file','NB7783v2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can NB',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1689','ATS77 to WGS 84 (2)','Parameter file is from ATS77 to NAD83(CSRS) (2) (code 1846) assuming that NAD83(CSRS) is equivalent to WGS 84 within the accuracy of the transformation.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4122','EPSG','4326','EPSG','1533',1.0,'EPSG','8656','Latitude and longitude difference file','PE7783V2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can PEI',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1688','ATS77 to WGS 84 (1)','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.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4122','EPSG','4326','EPSG','1447',1.5,'EPSG','8656','Latitude and longitude difference file','NB7783v2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can NB',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1689','ATS77 to WGS 84 (2)','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.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4122','EPSG','4326','EPSG','1533',1.5,'EPSG','8656','Latitude and longitude difference file','PE7783V2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can PEI',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1690','NAD27(76) to WGS 84 (1)','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.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4608','EPSG','4326','EPSG','1367',1.0,'EPSG','8656','Latitude and longitude difference file','May76v20.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can On',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1691','NAD27(CGQ77) to WGS 84 (3)','Parameter file is from NAD27(CGQ77) to NAD83(CSRS) (1) (code 1845) assuming that NAD83(CSRS98) is equivalent to WGS 84 within the accuracy of the transformation. Also distributed with file name CGQ77-98.gsb.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4609','EPSG','4326','EPSG','1368',1.0,'EPSG','8656','Latitude and longitude difference file','CQ77NA83.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can Qc NT2',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1692','NAD27 to WGS 84 (34)','Parameter file is from NAD27 to NAD83(CSRS) (1) (code 1844) assuming that NAD83(CSRS) is equivalent to WGS 84 within the accuracy of the transformation. Also distributed as QUE27-98.gsb.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4267','EPSG','4326','EPSG','1368',1.0,'EPSG','8656','Latitude and longitude difference file','NA27SCRS.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can QC',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1691','NAD27(CGQ77) to WGS 84 (3)','Parameter file is from NAD27(CGQ77) to NAD83(CSRS)v2 (1) (code 9240) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation. Also distributed with file name CGQ77-98.gsb.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4609','EPSG','4326','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','CQ77NA83.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can Qc NT2',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1692','NAD27 to WGS 84 (34)','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.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4267','EPSG','4326','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','NA27SCRS.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can QC',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1693','NAD27 to WGS 84 (33)','Parameter file is from NAD27 to NAD83 (4) (code 1313) assuming that NAD83 is equivalent to WGS 84 within the accuracy of the transformation.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4267','EPSG','4326','EPSG','4517',1.0,'EPSG','8656','Latitude and longitude difference file','NTv2_0.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1694','American Samoa 1962 to WGS 84 (2)','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.','No accuracy stated for source transformation.','EPSG','9613','NADCON','EPSG','4169','EPSG','4326','EPSG','2288',5.0,'EPSG','8657','Latitude difference file','wshpgn.las','EPSG','8658','Longitude difference file','wshpgn.los',NULL,NULL,'EPSG-Asm W',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1695','American Samoa 1962 to WGS 84 (3)','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.','No accuracy stated for source transformation.','EPSG','9613','NADCON','EPSG','4169','EPSG','4326','EPSG','2289',5.0,'EPSG','8657','Latitude difference file','eshpgn.las','EPSG','8658','Longitude difference file','eshpgn.los',NULL,NULL,'EPSG-Asm E',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1696','NAD83 to WGS 84 (6)','Parameter file is from NAD83 to NAD83(CSRS) (1) (code 1843) assuming that NAD83(CSRS) is equivalent to WGS 84 within the accuracy of the transformation. Also distributed with file name NAD83-98.gsb.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4269','EPSG','4326','EPSG','1368',1.0,'EPSG','8656','Latitude and longitude difference file','NA83SCRS.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can QC',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1697','NAD83 to WGS 84 (7)','Parameter file is from NAD83 to NAD83(CSRS8) (2) (code 1848) assuming that NAD83(CSRS) is equivalent to WGS 84 within the accuracy of the transformation.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4269','EPSG','4326','EPSG','2375',1.0,'EPSG','8656','Latitude and longitude difference file','SK83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can SK',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1696','NAD83 to WGS 84 (6)','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.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4269','EPSG','4326','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','NA83SCRS.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can QC',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1697','NAD83 to WGS 84 (7)','Parameter file is from NAD83 to NAD83(CSRS8)v3 (2) (code 9243) assuming that NAD83(CSRS)v3 is equivalent to WGS 84 within the accuracy of the transformation.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4269','EPSG','4326','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can SK',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1698','St. George Island to WGS 84 (1)','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.','Approximation at the +/- 1 to 2m level.','EPSG','9613','NADCON','EPSG','4138','EPSG','4326','EPSG','1331',1.5,'EPSG','8657','Latitude difference file','stgeorge.las','EPSG','8658','Longitude difference file','stgeorge.los',NULL,NULL,'EPSG-Usa AK StG',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1699','St. Lawrence Island to WGS 84 (1)','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.','Approximation at the +/- 1 to 2m level.','EPSG','9613','NADCON','EPSG','4136','EPSG','4326','EPSG','1332',1.5,'EPSG','8657','Latitude difference file','stlrnc.las','EPSG','8658','Longitude difference file','stlrnc.los',NULL,NULL,'EPSG-Usa AK StL',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1700','St. Paul Island to WGS 84 (1)','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.','Approximation at the +/- 1 to 2m level.','EPSG','9613','NADCON','EPSG','4137','EPSG','4326','EPSG','1333',1.5,'EPSG','8657','Latitude difference file','stpaul.las','EPSG','8658','Longitude difference file','stpaul.los',NULL,NULL,'EPSG-Usa AK StP',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1702','NAD83 to WGS 84 (8)','Parameter file is from NAD83 to NAD83(CSRS) (3) (code 1849) assuming that NAD83(CSRS) 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 sodtware.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4269','EPSG','4326','EPSG','2376',1.0,'EPSG','8656','Latitude and longitude difference file','AB_CSRS.DAC',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can AB',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1703','NAD27 to WGS 84 (32)','Parameter file is from NAD27 to NAD83(CSRS) (1) (code 1847) assuming that NAD83(CSRS) is equivalent to WGS 84 within the accuracy of the transformation.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4267','EPSG','4326','EPSG','2375',1.0,'EPSG','8656','Latitude and longitude difference file','SK27-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can SK',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1702','NAD83 to WGS 84 (8)','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 sodtware.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4269','EPSG','4326','EPSG','2376',1.5,'EPSG','8656','Latitude and longitude difference file','AB_CSRS.DAC',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can AB',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1703','NAD27 to WGS 84 (32)','Parameter file is from NAD27 to NAD83(CSRS)v3 (2) (code 9242) assuming that NAD83(CSRS)v3 is equivalent to WGS 84 within the accuracy of the transformation.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4267','EPSG','4326','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK27-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can SK',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1704','NAD83 to NAD83(HARN) (40)','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.','Geodetic survey. Accuracy 0.05m at 67% confidence level.','EPSG','9613','NADCON','EPSG','4269','EPSG','4152','EPSG','1374',0.05,'EPSG','8657','Latitude difference file','arhpgn.las','EPSG','8658','Longitude difference file','arhpgn.los',NULL,NULL,'NGS-Usa AR',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1705','NAD83 to NAD83(HARN) (41)','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.','Geodetic survey. Accuracy 0.05m at 67% confidence level.','EPSG','9613','NADCON','EPSG','4269','EPSG','4152','EPSG','1384',0.05,'EPSG','8657','Latitude difference file','iahpgn.las','EPSG','8658','Longitude difference file','iahpgn.los',NULL,NULL,'NGS-Usa IA',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1706','NAD83 to NAD83(HARN) (42)','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.','Geodetic survey. Accuracy 0.05m at 67% confidence level.','EPSG','9613','NADCON','EPSG','4269','EPSG','4152','EPSG','1392',0.05,'EPSG','8657','Latitude difference file','mnhpgn.las','EPSG','8658','Longitude difference file','mnhpgn.los',NULL,NULL,'NGS-Usa MN',0);
@@ -139,16 +139,16 @@ INSERT INTO "grid_transformation" VALUES('EPSG','1750','NAD83 to WGS 84 (54)','P
 INSERT INTO "grid_transformation" VALUES('EPSG','1752','NAD83 to NAD83(CSRS98) (3)','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.','?','EPSG','9615','NTv2','EPSG','4269','EPSG','4140','EPSG','2376',NULL,'EPSG','8656','Latitude and longitude difference file','AB_CSRS.DAC',NULL,NULL,NULL,NULL,NULL,NULL,'AB Env-Can AB',1);
 INSERT INTO "grid_transformation" VALUES('EPSG','1803','AGD66 to GDA94 (11)','Replaces AGD66 to GDA94 variants 6, 7 and 10 (codes 1506 1507 1596). Input expects longitudes to be positive west; EPSG GeogCRS AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east. May be used as tfm to WGS 84 - see code 15786.','0.1m accuracy.','EPSG','9615','NTv2','EPSG','4202','EPSG','4283','EPSG','2575',0.1,'EPSG','8656','Latitude and longitude difference file','A66 National (13.09.01).gsb',NULL,NULL,NULL,NULL,NULL,NULL,'ICSM-Aus 0.1m',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','1804','AGD84 to GDA94 (5)','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','0.1m accuracy.','EPSG','9615','NTv2','EPSG','4203','EPSG','4283','EPSG','2576',0.1,'EPSG','8656','Latitude and longitude difference file','National 84 (02.07.01).gsb',NULL,NULL,NULL,NULL,NULL,NULL,'Auslig-Aus 0.1m',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1841','ATS77 to NAD83(CSRS) (1)','Introduced in 1999. Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1688.','Used in the GeoNB Coordinate Transformation Service. Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','4617','EPSG','1447',1.5,'EPSG','8656','Latitude and longitude difference file','NB7783v2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'GIC-Can NB',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1843','NAD83 to NAD83(CSRS) (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','4617','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','NAD83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1844','NAD27 to NAD83(CSRS) (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4267','EPSG','4617','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','QUE27-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1845','NAD27(CGQ77) to NAD83(CSRS) (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4609','EPSG','4617','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','CGQ77-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1846','ATS77 to NAD83(CSRS) (2)','Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1689.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','4617','EPSG','1533',1.5,'EPSG','8656','Latitude and longitude difference file','PE7783V2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'PEI DOT-Can PEI',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1847','NAD27 to NAD83(CSRS) (2)','Can be taken as an approximate transformation NAD27 to WGS 84 - see code 1703.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4267','EPSG','4617','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK27-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SK PMC-Can SK',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1848','NAD83 to NAD83(CSRS) (2)','Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1697.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','4617','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SK PMC-Can SK',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1849','NAD83 to NAD83(CSRS) (3)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','4617','EPSG','2376',1.5,'EPSG','8656','Latitude and longitude difference file','AB_CSRS.DAC',NULL,NULL,NULL,NULL,NULL,NULL,'AB Env-Can AB',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1850','ATS77 to NAD83(CSRS) (3)','Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1851.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','4617','EPSG','2313',1.5,'EPSG','8656','Latitude and longitude difference file','NS778301.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'NSGC-Can NS',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','1851','ATS77 to WGS 84 (3)','Parameter file is from ATS77 to NAD83(CSRS) (3) (code 1850) assuming that NAD83(CSRS) is equivalent to WGS 84 within the accuracy of the transformation.','Approximation at the +/- 1m level.','EPSG','9615','NTv2','EPSG','4122','EPSG','4326','EPSG','2313',1.0,'EPSG','8656','Latitude and longitude difference file','NS778301.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can NS',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','1841','ATS77 to NAD83(CSRS) (1)','Introduced in 1999. Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1688.','Used in the GeoNB Coordinate Transformation Service. Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','4617','EPSG','1447',1.5,'EPSG','8656','Latitude and longitude difference file','NB7783v2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'GIC-Can NB',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1843','NAD83 to NAD83(CSRS) (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','4617','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','NAD83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1844','NAD27 to NAD83(CSRS) (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4267','EPSG','4617','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','QUE27-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1845','NAD27(CGQ77) to NAD83(CSRS) (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4609','EPSG','4617','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','CGQ77-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1846','ATS77 to NAD83(CSRS) (2)','Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1689.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','4617','EPSG','1533',1.5,'EPSG','8656','Latitude and longitude difference file','PE7783V2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'PEI DOT-Can PEI',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1847','NAD27 to NAD83(CSRS) (2)','Can be taken as an approximate transformation NAD27 to WGS 84 - see code 1703.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4267','EPSG','4617','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK27-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SK PMC-Can SK',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1848','NAD83 to NAD83(CSRS) (2)','Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1697.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','4617','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SK PMC-Can SK',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1849','NAD83 to NAD83(CSRS) (3)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','4617','EPSG','2376',1.5,'EPSG','8656','Latitude and longitude difference file','AB_CSRS.DAC',NULL,NULL,NULL,NULL,NULL,NULL,'AB Env-Can AB',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1850','ATS77 to NAD83(CSRS) (3)','Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1851.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','4617','EPSG','2313',1.5,'EPSG','8656','Latitude and longitude difference file','NS778301.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'NSGC-Can NS',1);
+INSERT INTO "grid_transformation" VALUES('EPSG','1851','ATS77 to WGS 84 (3)','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.','Approximation at the +/- 1-2m level.','EPSG','9615','NTv2','EPSG','4122','EPSG','4326','EPSG','2313',1.5,'EPSG','8656','Latitude and longitude difference file','NS778301.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'EPSG-Can NS',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','3858','WGS 84 to EGM2008 height (1)','Replaces WGS 84 to EGM96 height (1) (CT code 15781). Grid spacing is 2.5 arc-minutes. For a smaller spacing (in principle more exact but requiring greater computing resources) see CT code 3859. An executable using spherical harmonics is also available.','Derivation of gravity-related heights from GPS observations.','EPSG','1025','Geographic3D to GravityRelatedHeight (EGM2008)','EPSG','4979','EPSG','3855','EPSG','1262',1.0,'EPSG','8666','Geoid (height correction) model file','Und_min2.5x2.5_egm2008_isw=82_WGS84_TideFree.gz',NULL,NULL,NULL,NULL,NULL,NULL,'NGA-World',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','3859','WGS 84 to EGM2008 height (2)','Replaces WGS 84 to EGM96 height (1) (CT code 15781). Grid spacing is 1 arc-minute. For a larger grid spacing (in principle less exact but requiring less computing resources) see CT code 3858. An executable using spherical harmonics is also available.','Derivation of gravity-related heights from GPS observations.','EPSG','1025','Geographic3D to GravityRelatedHeight (EGM2008)','EPSG','4979','EPSG','3855','EPSG','1262',0.5,'EPSG','8666','Geoid (height correction) model file','Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz',NULL,NULL,NULL,NULL,NULL,NULL,'NGA-World',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','4459','NZGD2000 to NZVD2009 height (1)','Defines NZVD2009 vertical datum (datum code 1039, CRS code 4440).','Derivation of gravity-related heights from GPS observations.','EPSG','1030','Geographic3D to GravityRelatedHeight (NZgeoid)','EPSG','4959','EPSG','4440','EPSG','1175',0.1,'EPSG','8666','Geoid (height correction) model file','nzgeoid09.sid',NULL,NULL,NULL,NULL,NULL,NULL,'LINZ-NZ 2009',0);
@@ -192,10 +192,10 @@ INSERT INTO "grid_transformation" VALUES('EPSG','6139','CIGD11 to LCVD61 height
 INSERT INTO "grid_transformation" VALUES('EPSG','6140','CIGD11 to CBVD61 height (ft) (1)','Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet.','Derivation of gravity-related heights from GPS observations.','EPSG','1050','Geographic3D to GravityRelatedHeight (CI)','EPSG','6134','EPSG','6132','EPSG','3207',0.03,'EPSG','8666','Geoid (height correction) model file','CBGM0811.TXT',NULL,NULL,NULL,NULL,NULL,NULL,'LSD-Cym',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','6188','Lisbon to ETRS89 (4)','Derived from 1129 common stations in the national geodetic network. Residuals at 130 further test points average 0.09m, maximum 0.30m.','Decimetre accuracy.','EPSG','9615','NTv2','EPSG','4207','EPSG','4258','EPSG','1294',0.1,'EPSG','8656','Latitude and longitude difference file','DLx_ETRS89_geo.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'IGP-Prt 0.1m',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','6189','Datum 73 to ETRS89 (6)','Derived from 1129 common stations in the national geodetic network. Residuals at 130 further test points average 0.06m, maximum 0.16m.','Decimetre accuracy.','EPSG','9615','NTv2','EPSG','4274','EPSG','4258','EPSG','1294',0.1,'EPSG','8656','Latitude and longitude difference file','D73_ETRS89_geo.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'IGP-Prt 0.1m',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','6209','NAD27 to NAD83(CSRS) (4)','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.','Used in the GeoNB Coordinate Transformation Service.','EPSG','9615','NTv2','EPSG','4267','EPSG','4617','EPSG','1447',0.8,'EPSG','8656','Latitude and longitude difference file','NB2783v2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SNB-Can NB',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','6209','NAD27 to NAD83(CSRS) (4)','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.','Used in the GeoNB Coordinate Transformation Service.','EPSG','9615','NTv2','EPSG','4267','EPSG','4617','EPSG','1447',0.8,'EPSG','8656','Latitude and longitude difference file','NB2783v2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SNB-Can NB',1);
 INSERT INTO "grid_transformation" VALUES('EPSG','6326','NAD83(2011) to NAVD88 height (1)','Uses Geoid12B hybrid model. Renamed from Geoid12A but with no data changes. See information source for further information.','Derivation of approximate gravity-related heights from GPS observations.','EPSG','9665','Geographic3D to GravityRelatedHeight (US .gtx)','EPSG','6319','EPSG','5703','EPSG','1323',0.02,'EPSG','8666','Geoid (height correction) model file','g2012bu0.bin',NULL,NULL,NULL,NULL,NULL,NULL,'NGS-US Conus',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','6327','NAD83(2011) to NAVD88 height (2)','Uses Geoid12B hybrid model. Renamed from Geoid12A but with no data changes. See information source for further information.','Derivation of approximate gravity-related heights from GPS observations.','EPSG','9665','Geographic3D to GravityRelatedHeight (US .gtx)','EPSG','6319','EPSG','5703','EPSG','1330',0.02,'EPSG','8666','Geoid (height correction) model file','g2012ba0.bin',NULL,NULL,NULL,NULL,NULL,NULL,'NGS-US AK',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','6648','NAD83(CSRS) to CGVD2013 height (1)','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.','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','4955','EPSG','6647','EPSG','1061',0.03,'EPSG','8666','Geoid (height correction) model file','CGG2013n83.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2013',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','6648','NAD83(CSRS) to CGVD2013 height (1)','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.','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','4955','EPSG','6647','EPSG','1061',0.03,'EPSG','8666','Geoid (height correction) model file','CGG2013n83.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2013',1);
 INSERT INTO "grid_transformation" VALUES('EPSG','6712','Tokyo to JGD2000 (2)','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).','Surveying, mapping and civil engineering.','EPSG','9615','NTv2','EPSG','4301','EPSG','4612','EPSG','3957',0.2,'EPSG','8656','Latitude and longitude difference file','tky2jgd.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'OGP-Jpn',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','6713','JGD2000 to JGD2011 (1)','NTv2 grid derived by ESRI from that supplied by GSI in application patchjgd.','Surveying, mapping and civil engineering purposes','EPSG','9615','NTv2','EPSG','4612','EPSG','6668','EPSG','4170',0.2,'EPSG','8656','Latitude and longitude difference file','touhokutaiheiyouoki2011.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'OGP-Jpn N Honshu',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','6740','Tokyo to JGD2011 (2)','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.','Surveying, mapping and civil engineering.','EPSG','9615','NTv2','EPSG','4301','EPSG','6668','EPSG','4194',0.2,'EPSG','8656','Latitude and longitude difference file','tky2jgd.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'OGP-Jpn ex N Honshu',0);
@@ -277,11 +277,11 @@ INSERT INTO "grid_transformation" VALUES('EPSG','8669','NAD83 to NAD83(HARN) (50
 INSERT INTO "grid_transformation" VALUES('EPSG','8676','Canada velocity grid v6','','Change of coordinate epoch for points referenced to NAD83(CSRS)v6.','EPSG','1070','Point motion by grid (Canada NTv2_Vel)','EPSG','8251','EPSG','8251','EPSG','1061',0.01,'EPSG','1050','Point motion velocity grid file','cvg60.cvb',NULL,NULL,NULL,NULL,NULL,NULL,'NRC-Can cvg6.0',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','8885','RGF93 to NGF IGN69 height (3)','Replaces RGF93 to NGF IGN69 height (2) (code 8371). Accuracy at each 0.0333333333333° in longitude and 0.025° in latitude grid node is given within the geoid model file. Recommended interpolation method is bilinear.','Derivation of gravity-related heights from GPS observations.','EPSG','1073','Geographic3D to GravityRelatedHeight (IGN2009)','EPSG','4965','EPSG','5720','EPSG','1326',0.01,'EPSG','8666','Geoid (height correction) model file','RAF18.tac',NULL,NULL,NULL,NULL,NULL,NULL,'IGN Fra 18',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9105','ATS77 to NAD83 (1)','','Spatial referencing.','EPSG','9615','NTv2','EPSG','4122','EPSG','4269','EPSG','2313',0.5,'EPSG','8656','Latitude and longitude difference file','GS7783.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'NSGC-Can NS',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','9106','ATS77 to NAD83(CSRS)v6 (4)','Derived through NAD83(CSRS)v6 but within accuracy of transformation may be assumed to apply to any version.','Spatial referencing.','EPSG','9615','NTv2','EPSG','4122','EPSG','8252','EPSG','2313',0.06,'EPSG','8656','Latitude and longitude difference file','NS778302.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'NSGC-Can NS v2',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9106','ATS77 to NAD83(CSRS)v6 (4)','Derived through NAD83(CSRS)v6. Replaces ATS77 to NAD83(CSRS)v3 (3) (transformation code 9235).','Spatial referencing.','EPSG','9615','NTv2','EPSG','4122','EPSG','8252','EPSG','2313',0.06,'EPSG','8656','Latitude and longitude difference file','NS778302.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'NSGC-Can NS v2',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9107','NAD27 to NAD83(CSRS)v3 (5)','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).','Spatial referencing.','EPSG','9615','NTv2','EPSG','4267','EPSG','8240','EPSG','4537',1.5,'EPSG','8656','Latitude and longitude difference file','ON27CSv1.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'LIO-Can Ont ex Tor',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9108','NAD27 to NAD83(CSRS)v3 (6)','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).','Spatial referencing.','EPSG','9615','NTv2','EPSG','4267','EPSG','8240','EPSG','4536',1.0,'EPSG','8656','Latitude and longitude difference file','TOR27CSv1.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'LIO-Can Ont Tor',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9109','NAD27(76) to NAD83(CSRS)v3 (1)','Derived through NAD83(CSRS)v3 but within accuracy of transformation may be assumed to apply to any version.','Spatial referencing.','EPSG','9615','NTv2','EPSG','4608','EPSG','8240','EPSG','1367',1.0,'EPSG','8656','Latitude and longitude difference file','ON76CSv1.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'LIO-Can Ont',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','9110','NAD83 to NAD83(CSRS)v3 (5)','Derived through NAD83(CSRS)v3 but within accuracy of transformation may be assumed to apply to any version.','Spatial referencing.','EPSG','9615','NTv2','EPSG','4269','EPSG','8240','EPSG','1367',0.1,'EPSG','8656','Latitude and longitude difference file','ON83CSv1.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'LIO-Can Ont',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9110','NAD83 to NAD83(CSRS)v3 (5)','Derived through NAD83(CSRS)v3.','Spatial referencing.','EPSG','9615','NTv2','EPSG','4269','EPSG','8240','EPSG','1367',0.1,'EPSG','8656','Latitude and longitude difference file','ON83CSv1.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'LIO-Can Ont',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9111','NAD27 to NAD83 (9)','','Spatial referencing.','EPSG','9615','NTv2','EPSG','4267','EPSG','4269','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK27-83.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'ISC-Can SK',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9112','NAD27 to NAD83(CSRS)v2 (7)','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.','Spatial referencing.','EPSG','9615','NTv2','EPSG','4267','EPSG','8237','EPSG','2832',1.5,'EPSG','8656','Latitude and longitude difference file','BC_27_98.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'GeoBC-Can BC CSRSv2',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9113','NAD27 to NAD83(CSRS)v3 (8)','Derived through NAD83(CSRS)v3.','Spatial referencing.','EPSG','9615','NTv2','EPSG','4267','EPSG','8240','EPSG','4533',1.5,'EPSG','8656','Latitude and longitude difference file','CRD27_00.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'GeoBC-Can BC CRD',0);
@@ -295,8 +295,8 @@ INSERT INTO "grid_transformation" VALUES('EPSG','9120','NAD83(CSRS)v2 to NAD83(C
 INSERT INTO "grid_transformation" VALUES('EPSG','9121','NAD83(CSRS)v2 to NAD83(CSRS)v3 (2)','','Spatial referencing.','EPSG','9615','NTv2','EPSG','8237','EPSG','8240','EPSG','4534',0.1,'EPSG','8656','Latitude and longitude difference file','NVI98_05.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'GeoBC-Can BC NVI',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9122','NAD83(CSRS)v2 to NAD83(CSRS)v4 (1)','','Spatial referencing.','EPSG','9615','NTv2','EPSG','8237','EPSG','8240','EPSG','4535',0.1,'EPSG','8656','Latitude and longitude difference file','BC_98_05.GSB',NULL,NULL,NULL,NULL,NULL,NULL,'GeoBC-Can BC mainland',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9123','NAD83(CSRS) to CGVD28 height (1)','Derived through NAD83(CSRS)v3.','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','4955','EPSG','5713','EPSG','1061',0.05,'EPSG','8666','Geoid (height correction) model file','HT2_0.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2000',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','9124','ITRF2008 to CGVD2013 height (1)','Uses CGG2013 model derived through NAD83(CSRS)v6 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 model CGG2013a (CT code 9125).','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','7911','EPSG','6647','EPSG','1061',0.03,'EPSG','8666','Geoid (height correction) model file','CGG2013i83.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2013',0);
-INSERT INTO "grid_transformation" VALUES('EPSG','9125','ITRF2008 to CGVD2013 height (2)','Uses CGG2013a model derived through NAD83(CSRS)v6 which uses bi-quadratic interpolation; bi-linear interpolation of the grid file will give results agreeing to within 1cm 99.97% of the time. Replaces model CGG2013 (CT code 9124).','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','7911','EPSG','6647','EPSG','1061',0.03,'EPSG','8666','Geoid (height correction) model file','CGG2013i08a.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2013a',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9124','ITRF2008 to CGVD2013(CGG2013) height (1)','Uses CGG2013 model derived through NAD83(CSRS)v6 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 CT code 9125.','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','7911','EPSG','6647','EPSG','1061',0.03,'EPSG','8666','Geoid (height correction) model file','CGG2013i83.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2013',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9125','ITRF2008 to CGVD2013(CGG2013a) height (2)','Uses CGG2013a model derived through NAD83(CSRS)v6 which uses bi-quadratic interpolation; bi-linear interpolation of the grid file will give results agreeing to within 1cm 99.97% of the time. Replaces CT code 9124.','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','7911','EPSG','9245','EPSG','1061',0.03,'EPSG','8666','Geoid (height correction) model file','CGG2013i08a.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2013a',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9131','RGAF09 to IGN 2008 LD height (1)','Replaces RGAF09 to IGN 1992 LD height (1) (CT code 5507). Accuracy 0.1-0.2m within onshore area.','Derivation of gravity-related heights from GPS observations.','EPSG','1073','Geographic3D to GravityRelatedHeight (IGN2009)','EPSG','5488','EPSG','9130','EPSG','2893',0.2,'EPSG','8666','Geoid (height correction) model file','RALD2016.mnt',NULL,NULL,NULL,NULL,NULL,NULL,'IGN-Glp Des',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9132','RRAF 1991 to IGN 2008 LD height (1)','Replaces RRAF 1991 to IGN 1992 LD height (1) (CT code 4566). Accuracy 0.1-0.2m within onshore area.','Derivation of gravity-related heights from GPS observations.','EPSG','1073','Geographic3D to GravityRelatedHeight (IGN2009)','EPSG','4557','EPSG','9130','EPSG','2893',0.2,'EPSG','8666','Geoid (height correction) model file','RALDW842016.mnt',NULL,NULL,NULL,NULL,NULL,NULL,'IGN Glp Des',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9133','RGAF09 to Guadeloupe 1988 height (2)','Replaces RGAF09 to Guadeloupe 1988 height (1) (CT code 5503). Accuracy 0.01-0.05m within onshore areas.','Derivation of gravity-related heights from GPS observations.','EPSG','1073','Geographic3D to GravityRelatedHeight (IGN2009)','EPSG','5488','EPSG','5757','EPSG','2892',0.05,'EPSG','8666','Geoid (height correction) model file','RAGTBT2016.mnt',NULL,NULL,NULL,NULL,NULL,NULL,'IGN Glp GT 2016',0);
@@ -329,6 +329,18 @@ INSERT INTO "grid_transformation" VALUES('EPSG','9230','NAD83(2011) to PRVD02 he
 INSERT INTO "grid_transformation" VALUES('EPSG','9231','NAD83(2011) to VIVD09 height (2)','Uses Geoid18 hybrid model. Replaces 12B model. See information source for further information.','Derivation of approximate gravity-related heights from GPS observations.','EPSG','9665','Geographic3D to GravityRelatedHeight (US .gtx)','EPSG','6319','EPSG','6642','EPSG','3330',0.015,'EPSG','8666','Geoid (height correction) model file','g2018p0.bin',NULL,NULL,NULL,NULL,NULL,NULL,'NGS-Vir 18',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9232','ISN93 to ISN2016 (1)','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.','Spatial referencing.','EPSG','9615','NTv2','EPSG','4659','EPSG','8086','EPSG','1120',0.05,'EPSG','8656','Latitude and longitude difference file','ISN93_ISN2016.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'LMI-Isl',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','9233','ISN2004 to ISN2016 (1)','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.','Spatial referencing.','EPSG','9615','NTv2','EPSG','5324','EPSG','8086','EPSG','1120',0.05,'EPSG','8656','Latitude and longitude difference file','ISN2004_ISN2016.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'LMI-Isl',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9235','ATS77 to NAD83(CSRS)v3 (3)','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).','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','8240','EPSG','2313',1.5,'EPSG','8656','Latitude and longitude difference file','NS778301.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'NSGC-Can NS',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9236','ATS77 to NAD83(CSRS)v2 (2)','Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1689.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','8237','EPSG','1533',1.5,'EPSG','8656','Latitude and longitude difference file','PE7783V2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'PEI DOT-Can PEI',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9237','ATS77 to NAD83(CSRS)v2 (1)','Introduced in 1999. Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1688.','Used in the GeoNB Coordinate Transformation Service. Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4122','EPSG','8237','EPSG','1447',1.5,'EPSG','8656','Latitude and longitude difference file','NB7783v2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'GIC-Can NB',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9238','NAD27 to NAD83(CSRS)v2 (4)','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.','Used in the GeoNB Coordinate Transformation Service.','EPSG','9615','NTv2','EPSG','4267','EPSG','8237','EPSG','1447',0.8,'EPSG','8656','Latitude and longitude difference file','NB2783v2.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SNB-Can NB',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9239','NAD27 to NAD83(CSRS)v2 (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4267','EPSG','8237','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','QUE27-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9240','NAD27(CGQ77) to NAD83(CSRS)v2 (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4609','EPSG','8237','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','CGQ77-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9241','NAD83 to NAD83(CSRS)v2 (1)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','8237','EPSG','1368',1.5,'EPSG','8656','Latitude and longitude difference file','NAD83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SGQ-Can QC',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9242','NAD27 to NAD83(CSRS)v3 (2)','Can be taken as an approximate transformation NAD27 to WGS 84 - see code 1703.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4267','EPSG','8240','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK27-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SK PMC-Can SK',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9243','NAD83 to NAD83(CSRS)v3 (2)','Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1697.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','8240','EPSG','2375',1.5,'EPSG','8656','Latitude and longitude difference file','SK83-98.gsb',NULL,NULL,NULL,NULL,NULL,NULL,'SK PMC-Can SK',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9244','NAD83 to NAD83(CSRS)v4 (3)','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.','Accuracy 1-2 metres.','EPSG','9615','NTv2','EPSG','4269','EPSG','8246','EPSG','2376',1.5,'EPSG','8656','Latitude and longitude difference file','AB_CSRS.DAC',NULL,NULL,NULL,NULL,NULL,NULL,'AB Env-Can AB',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9246','NAD83(CSRS)v6 to CGVD2013(CGG2013) height (1)','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).','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','8251','EPSG','6647','EPSG','1061',0.03,'EPSG','8666','Geoid (height correction) model file','CGG2013n83.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2013',0);
+INSERT INTO "grid_transformation" VALUES('EPSG','9247','NAD83(CSRS)v6 to CGVD2013(CGG2013a) height (1)','Uses CGG2013a 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. Replaces CGG2013 model (CT code 9246).','Derivation of gravity-related heights from GPS observations.','EPSG','1060','Geographic3D to GravityRelatedHeight (CGG2013)','EPSG','8251','EPSG','9245','EPSG','1061',0.03,'EPSG','8666','Geoid (height correction) model file','CGG2013n83a.byn',NULL,NULL,NULL,NULL,NULL,NULL,'NRC Can CGG2013a',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','10000','RGF93 to NGF IGN69 height (1)','May be used for transformations from WGS 84 to NGF IGN69. Accuracy at each 0.1 deg x 0.1 degree grid node is given within the geoid model file.','Derivation of gravity-related heights from GPS observations.','EPSG','9664','Geographic3D to GravityRelatedHeight (IGN1997)','EPSG','4965','EPSG','5720','EPSG','1326',0.5,'EPSG','8666','Geoid (height correction) model file','ggf97a.txt',NULL,NULL,NULL,NULL,NULL,NULL,'IGN Fra',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','10001','ETRS89 to NGF IGN69 height (1)','Parameter values taken from RGF93 to NGF IGN69 (1) (code 10000) assuming that RGF93 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.','Derivation of gravity-related heights from GPS observations.','EPSG','9664','Geographic3D to GravityRelatedHeight (IGN1997)','EPSG','4937','EPSG','5720','EPSG','1326',0.5,'EPSG','8666','Geoid (height correction) model file','ggf97a.txt',NULL,NULL,NULL,NULL,NULL,NULL,'IGN Fra',0);
 INSERT INTO "grid_transformation" VALUES('EPSG','10002','RGF93 to IGN78 Corsica height (1)','May be used for transformations from WGS 84 to IGN78 Corsica. Accuracy at each 0.1 deg x 0.1 degree grid node is given within the geoid model file.','Derivation of gravity-related heights from GPS observations.','EPSG','9664','Geographic3D to GravityRelatedHeight (IGN1997)','EPSG','4965','EPSG','5721','EPSG','1327',0.5,'EPSG','8666','Geoid (height correction) model file','ggf97a_corse.txt',NULL,NULL,NULL,NULL,NULL,NULL,'IGN Fra Cor',0);
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