FSLR Spectral Correction

[johank]

Hi,

I'm curious how / where the spectral correction model (e.g. when using First Solar) is applied. It's reported as a power correction in the output file; when I compare that power correction to Earray (or EarrMPP), the relative difference is close to - but not exactly the same - as the spectral correction factor calculated with the Gueymard & Panchula/Lee models. 

Is the correction applied to one of the irradiance quantities, and if so - which one?

Thanks!

-Johan