99-05-11 New options

Introduced new possible adjustment of radiation estimates as function of altitude and slope. A new  Turbidity switch in radiation group enables an account of the solar angle for more precise estimates of incoming global radiation. New parameters are in the group of meteorological data: Slope N-S and Slope W-E represent relative slope in units of (length/length). The parameters for altitude are AltMetStation and AltSimPosition. TairLapseRate represents the mean change of temperature with height. The radiation functions were provided by Dr. Plüss, ETZ, Switzerland.       DG