U.V. Rays at record High...

reply to post by DrZrD

An R squared of 0.3 is not really that strong of a trend and it's obviously strongly affected by the 0 days in 2003 and 2004. I think the somewhat arbitrary cutoff point of 11 for the "Extreme" rating may be problematic for a real analysis as well. As you say, using raw data would be more helpful for a number of reasons.

Solar irradiance varies very little across the solar cycle so it's unlikely that would appear in data which involves a number of stronger influences.

Originally posted by DrZrD
reply to post by Phage

 

Edited: Sorry, I had asked about using non parametric statistics to evaluate the data, then saw your further work.

the world is different than when I was a kid in the 70's no doubt i my mind. I can feel the difference on my skin

not scientific, pure anecdotal, but I agree it's different now