VERT_CS["GUVD04 height",
    VERT_DATUM["Guam Vertical Datum of 2004",2005,
        AUTHORITY["EPSG","1126"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Gravity-related height",UP],
    AUTHORITY["EPSG","6644"]]