property Location.VerticalPrecision as Long
Specifies the vertical precision of the data, in centimeters.

TypeDescription
Long A long expression that specifies the vertical precision of the data, in centimeters.

The VerticalPrecision is the total potential vertical error, rather than a "plus or minus" value. Note that if altitude above or below sea level is used as an approximation for altitude relative to the ellipsoid, the precision value should be adjusted.