Well Known Text
WKT Version 2
COORDINATEOPERATION["CH1903 to WGS 84 (3)",VERSION["OGP-Che NTv2"],SOURCECRS[GEOGCRS["CH1903",DATUM["CH1903",ELLIPSOID["Bessel 1841",6377397.155,299.1528128,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7004]],ID["EPSG",6149]],CS[ellipsoidal,2,ID["EPSG",6422]],AXIS["Geodetic latitude (Lat)",north],AXIS["Geodetic longitude (Lon)",east],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",4149]]],TARGETCRS[GEOGCRS["WGS 84",ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)", ID["EPSG",1166]], MEMBER["World Geodetic System 1984 (G730)", ID["EPSG",1152]], MEMBER["World Geodetic System 1984 (G873)", ID["EPSG",1153]], MEMBER["World Geodetic System 1984 (G1150)", ID["EPSG",1154]], MEMBER["World Geodetic System 1984 (G1674)", ID["EPSG",1155]], MEMBER["World Geodetic System 1984 (G1762)", ID["EPSG",1156]], MEMBER["World Geodetic System 1984 (G2139)", ID["EPSG",1309]], MEMBER["World Geodetic System 1984 (G2296)", ID["EPSG",1383]], ELLIPSOID["WGS 84",6378137,298.257223563,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7030]], ENSEMBLEACCURACY[2],ID["EPSG",6326]],CS[ellipsoidal,2,ID["EPSG",6422]],AXIS["Geodetic latitude (Lat)",north],AXIS["Geodetic longitude (Lon)",east],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",4326]]],METHOD["NTv2",ID["EPSG",9615]],PARAMETERFILE["Latitude and longitude difference file","CHENyx06_ETRS.gsb",ID["EPSG",8656]],OPERATIONACCURACY[1.5],ID["EPSG",7788]]