Well Known Text
 
WKT Version 2
COORDINATEOPERATION["RGAF09 to IGN 1988 SB height (2)",VERSION["IGN Glp StB v2"],SOURCECRS[GEOGCRS["RGAF09",DATUM["Reseau Geodesique des Antilles Francaises 2009",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7019]],ID["EPSG",1073]],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",5488]]],TARGETCRS[VERTCRS["IGN 1988 SB height",VDATUM["IGN 1988 SB",ID["EPSG",5213]],CS[vertical,1,ID["EPSG",6499]],AXIS["Gravity-related height (H)",up],LENGTHUNIT["metre",1,ID["EPSG",9001]],GEOIDMODEL["RRAF 1991 to IGN 1988 SB height (1)",ID["EPSG",4567]],GEOIDMODEL["RGAF09 to IGN 1988 SB height (1)",ID["EPSG",5508]],GEOIDMODEL["RGAF09 to IGN 1988 SB height (2)",ID["EPSG",9187]],ID["EPSG",5619]]],METHOD["Geographic3D to GravityRelatedHeight (IGN2009)",ID["EPSG",1073]],PARAMETERFILE["Geoid (height correction) model file","gg10_sbv2.mnt",ID["EPSG",8666]],OPERATIONACCURACY[0.1],ID["EPSG",9187]]