VERT_CS["IGS97",
    VERT_DATUM["IGS97",2002,
        AUTHORITY["ESRI","from_geogdatum_EPSG_1244"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Ellipsoidal height",UP],
    AUTHORITY["ESRI","115867"]]