002332L 1 0600061   2304000021000000129021XREF72050VATT501220000;&8902XREF.DDF0100;&DDF RECORD IDENTIFER1600;&External Spatial ReferenceMODN!RCID!COMT!RSNM!HDAT!ZONE(A,I,4A)1600;&Vertical AttributesVDAT!VEM!ATLB!AUTH(4A)00281 D 1   00055   33040001008000XREF189008VATT0291970000001XREF1National Geodetic Vertical Datum 1929 Vertical Datum Shift = 0.65; always add to convert from National Geodetic Vertical Datum 1929 to North American Vertical Datum 1988.UTMNAS11NGVDCELLELEVATIONUSGS/NMD