COMPD_CS["St-Pierre-et-Miquelon UTM Nord f.21 et DANGER 1950 (SAINT-PIERRE-ET-MIQUELON)",
    PROJCS["St-Pierre-et-Miquelon UTM Nord f.21",
        GEOGCS["St Pierre Miquelon 1950 geographiques (dms)",
            DATUM["Saint_Pierre_et_Miquelon_1950",
                SPHEROID["Clarke 1866",6378206.4,294.978698213898,
                    AUTHORITY["EPSG","7008"]],
                AUTHORITY["EPSG","6638"]],
            PRIMEM["Greenwich",0,
                AUTHORITY["EPSG","8901"]],
            UNIT["degree",0.0174532925199433,
                AUTHORITY["EPSG","9122"]],
            AUTHORITY["IGNF","STPM50G"]],
        PROJECTION["Transverse_Mercator"],
        PARAMETER["latitude_of_origin",0],
        PARAMETER["central_meridian",-57],
        PARAMETER["scale_factor",0.9996],
        PARAMETER["false_easting",500000],
        PARAMETER["false_northing",0],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Easting",EAST],
        AXIS["Northing",NORTH],
        AUTHORITY["IGNF","STPM50UTM21"]],
    VERT_CS["DANGER 1950 (SAINT-PIERRE-ET-MIQUELON)",
        VERT_DATUM["DANGER 1950 (SAINT-PIERRE-ET-MIQUELON)",2005,
            AUTHORITY["IGNF","REA018"]],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Gravity-related height",UP],
        AUTHORITY["IGNF","STPM50_V"]],
    AUTHORITY["IGNF","STPM50UTM21.STPM50"]]