VERTCRS["SIRGAS_ES2007.8",
    VDATUM["D_SIRGAS_ES2007.8"],
    CS[vertical,1],
        AXIS["ellipsoidal height (h)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Not known."],
        AREA["El Salvador - onshore and offshore."],
        BBOX[9.97,-91.43,14.44,-87.65]],
    ID["ESRI",115791]]