geoid undulation
as defined in Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down…
the distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid
as defined in Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down…
the distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid