VERTCRS["Vienna height",
    VDATUM["Wiener Null"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Municipal spatial referencing."],
        AREA["Austria - Vienna city state."],
        BBOX[48.12,16.18,48.34,16.59]],
    ID["EPSG",8881]]