GEOGCS["GCS_RGNC_geographiques_dms",DATUM["D_RGNC_1991",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],VERTCS["NIVELLEMENT_GENERAL_DE_MARE_IGN_1991_MR",VDATUM["NIVELLEMENT_GENERAL_DE_MARE_IGN_1991_MR"],PARAMETER["Vertical_Shift",0.0],PARAMETER["Direction",1.0],UNIT["Meter",1.0]]