UND: Undulation

The UND record specifies a geoid undulation.

The format of the UND record is as follows:

Columns 002-005: UND
Columns 011-022: Undulation
Columns 024-024: Indicator for north (n/N/space) or south (s/S) latitude
Columns 025-027: Degrees of latitude
Columns 029-030: Minutes of latitude
Columns 032-040: Seconds of latitude
Columns 042-042: Indicator for east (e/E/space) or west (w/W) longitude
Columns 043-045: Degrees of longitude
Columns 047-048: Minutes of longitude
Columns 050-058: Seconds of longitude
Columns 060-061: Linear unit name
Columns 063-078: Reference ellipsoid name