Clear sky#
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 | Calculate the clear sky estimates of GHI, DNI, and/or DHI at this location. | 
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 | Determine clear sky GHI, DNI, and DHI from Ineichen/Perez model. | 
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 | Look up the Linke Turibidity from the  | 
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 | Calculate the clear sky GHI, DNI, and DHI according to the simplified Solis model. | 
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 | Determine clear sky GHI using the Haurwitz model. | 
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 | Detects clear sky times using the algorithm developed by Reno and Hansen. | 
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 | Bird Simple Clear Sky Broadband Solar Radiation Model | 
