GEOGCRS["ATF (Paris)",
    DATUM["Ancienne Triangulation Francaise (Paris)",
        ELLIPSOID["Plessis 1817",6376523,308.64,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Paris RGS",2.33720833333333,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[ellipsoidal,2],
        AXIS["geodetic latitude (Lat)",north,
            ORDER[1],
            ANGLEUNIT["grad",0.0157079632679489]],
        AXIS["geodetic longitude (Lon)",east,
            ORDER[2],
            ANGLEUNIT["grad",0.0157079632679489]],
    USAGE[
        SCOPE["Geodesy."],
        AREA["France - mainland onshore."],
        BBOX[42.33,-4.87,51.14,8.23]],
    ID["EPSG",4901]]