GEOGCS["NTF",
    DATUM["Nouvelle_Triangulation_Francaise",
        SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],
        EXTENSION["PROJ4_GRIDS","rgf93_ntf.gsb"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4275"]]