VERT_CS["Tahaa SAU 2001 height",
    VERT_DATUM["Tahaa SAU 2001",2005,
        AUTHORITY["EPSG","5201"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Gravity-related height",UP],
    AUTHORITY["EPSG","5606"]]