Well Known Text

COORDINATEOPERATION["RGFG95 to RGFG95 + NGG1977 height (1)",VERSION["IGN Guf"],SOURCECRS[GEOGCRS["RGFG95",DATUM["Reseau Geodesique Francais Guyane 1995",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7019]],ID["EPSG",6624]],CS[ellipsoidal,3,ID["EPSG",6423]],AXIS["Geodetic latitude (Lat)",north,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]]],AXIS["Geodetic longitude (Lon)",east,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]]],AXIS["Ellipsoidal height (h)",up,LENGTHUNIT["metre",1,ID["EPSG",9001]]],ID["EPSG",4967]]],TARGETCRS[COMPOUNDCRS["RGFG95 + NGG1977 height",GEOGCRS["RGFG95",DATUM["Reseau Geodesique Francais Guyane 1995",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7019]],ID["EPSG",6624]],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",4624]],VERTCRS["NGG1977 height",VDATUM["Nivellement General Guyanais 1977",ID["EPSG",5153]],CS[vertical,1,ID["EPSG",6499]],AXIS["Gravity-related height (H)",up],LENGTHUNIT["metre",1,ID["EPSG",9001]],GEOIDMODEL["RGFG95 to NGG1977 height (1)",ID["EPSG",10011]],ID["EPSG",5755]],ID["EPSG",9530]]],METHOD["Geog3D to Geog2D+GravityRelatedHeight (IGN1997)",ID["EPSG",1094]],PARAMETERFILE["Geoid (height correction) model file","ggguy00.txt",ID["EPSG",8666]],PARAMETER["EPSG code for Interpolation CRS",4624,ID["EPSG",1048]],OPERATIONACCURACY[998],ID["EPSG",9630]]