VERTCRS["PRS_1992",
    VDATUM["D_Philippine_Reference_System_1992"],
    CS[vertical,1],
        AXIS["ellipsoidal height (h)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Not known."],
        AREA["Philippines - onshore and offshore."],
        BBOX[3,116.04,22.18,129.95]],
    ID["ESRI",115771]]