GEOGCS["Unknown datum based upon the Average Terrestrial System 1977 ellipsoid (deprecated)",
    DATUM["Not_specified_based_on_Average_Terrestrial_System_1977_ellipsoid",
        SPHEROID["Average Terrestrial System 1977",6378135,298.257,
            AUTHORITY["EPSG","7041"]],
        AUTHORITY["EPSG","6041"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4041"]]