This covers much of it. Also inderect sunlight matters too. So any percentage non sky (groud/horizon) the panel "sees" wil have less indirect sunlight than the (blue or even cloudy) sky going towards the panel.
Thank you for this lesson!
This covers much of it. Also inderect sunlight matters too. So any percentage non sky (groud/horizon) the panel "sees" wil have less indirect sunlight than the (blue or even cloudy) sky going towards the panel.