COMPD_CS["RGF93 v2b + NGF-IGN78 height",GEOGCS["RGF93 v2b",DATUM["Reseau_Geodesique_Francais_1993_v2b",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1313"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","9782"]],VERT_CS["NGF-IGN78 height",VERT_DATUM["Nivellement General de la France - IGN78",2005,AUTHORITY["EPSG","5120"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5721"]],AUTHORITY["EPSG","10507"]]