出典:Wikipedia
出典:『Wikipedia』 (2011/03/01 10:10 UTC 版)
VERTCON is a computer program that computes the modeled difference in orthometric height between North American Vertical Datum of 1988 (NAVD 88) and the National Geodetic Vertical Datum of 1929 (NGVD 29) for a location in the contiguous United States. The parameters required are the latitude and longitude of the location.