COMPD_CS["ATIG Bonne France Etat Major et NGF-LALLEMAND",
    PROJCS["ATIG Bonne France Etat Major",
        GEOGCS["ATIG geographiques grades Paris (gr)",
            DATUM["Ancienne_Triangulation_Francaise_Paris",
                SPHEROID["Plessis 1817",6376523,308.64,
                    AUTHORITY["EPSG","7027"]],
                AUTHORITY["EPSG","6901"]],
            PRIMEM["Paris RGS",2.33720833333333,
                AUTHORITY["EPSG","8914"]],
            UNIT["grad",0.0157079632679489,
                AUTHORITY["EPSG","9105"]],
            AUTHORITY["IGNF","ATIGG"]],
        PROJECTION["Bonne"],
        PARAMETER["standard_parallel_1",50],
        PARAMETER["central_meridian",0],
        PARAMETER["false_easting",0],
        PARAMETER["false_northing",0],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Easting",EAST],
        AXIS["Northing",NORTH],
        AUTHORITY["IGNF","ATIGBONNE"]],
    VERT_CS["NGF-LALLEMAND",
        VERT_DATUM["NGF-LALLEMAND",2005,
            AUTHORITY["IGNF","REA002"]],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Gravity-related height",UP],
        AUTHORITY["IGNF","NGF84"]],
    AUTHORITY["IGNF","ATIGBONNE.NGF84"]]