GEOGCS["ATF (Paris)",
    DATUM["Ancienne_Triangulation_Francaise_Paris",
        SPHEROID["Plessis 1817",6376523,308.64,
            AUTHORITY["EPSG","7027"]],
        AUTHORITY["EPSG","6901"]],
    PRIMEM["Paris RGS",2.337208333333333,
        AUTHORITY["EPSG","8914"]],
    UNIT["grad",0.01570796326794897,
        AUTHORITY["EPSG","9105"]],
    AUTHORITY["EPSG","4901"]]