SaastamoinenModel with negative height
Using the SaastamoinenModel with a negative height causes an OutOfRangeException. E.g.
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Exception in thread "main"
org.apache.commons.math3.exception.OutOfRangeException: -0 out of [0,
5] range
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While most ground stations are above sea level it is quite possible to have a ground station that is below sea level or below the ellipsoid. I don't know the details of the model, but I think using sea level values would be acceptable for these cases.
(from redmine: issue id 202, created on 2015-05-13, closed on 2017-07-27)