VERT_CS["ASVD02 height",
    VERT_DATUM["American Samoa Vertical Datum of 2002",2005,
        AUTHORITY["EPSG","1125"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Gravity-related height",UP],
    AUTHORITY["EPSG","6643"]]