I wrote:
> 
> I would like to do some radiosity testing with outdoors scenes and
> for this I need to know how much energy comes just from the sun
> to the surface and how much from the rest of the sky.

I found that the ratio is from 8 to 9. Thanks to aquatic plant
hobbyists :)

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Kari Kivisalo                                  http://www.kivisalo.net

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