St. Helena Tritan Vertical Datum 2011
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St. Helena Tritan Vertical Datum 2011 Open
Datum Details [VALID]
Name: St. Helena Tritan Vertical Datum 2011
Code: 1176
Type: vertical
Usage:
Usage Details
Scope: Engineering survey.
Extent:

Origin: MSL defined by Longwood IGS station STHL reference level of 436.215m.
Realisation Method:
Publication Date: 2011