I have the same problem with the clearness index and I have check the calibration and the units.
This data come from a wheather station which is weekly maintenance because we are alse checking the soiling on syte project. I have import this data asPVsyst standard format. (GHI and temperature)
The weather station has two horizontal pyranometers and other one on the inclined plane. Moreover, I have 2 panel which are checking the soiling, one photo cell. All of the have a normal range of irradiance.
'Clearness index of the best clear daysis very high' problem
in Meteo data
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Hi,
I have the same problem with the clearness index and I have check the calibration and the units.
This data come from a wheather station which is weekly maintenance because we are alse checking the soiling on syte project. I have import this data asPVsyst standard format. (GHI and temperature)
The weather station has two horizontal pyranometers and other one on the inclined plane. Moreover, I have 2 panel which are checking the soiling, one photo cell. All of the have a normal range of irradiance.