The meter was designed to check the intensity in the Ulta Violet range of the spectrum. The professor gave me a rather detail lesson of radiation energy in the IR thru UV section of the ‘spectrum’ and it’s ability to transit a medium. He stated that the UV amount was insignificant in the hundreths (sp) of a percent and the meter confirmed it. I could differentiate no difference in value between canopies. UV is very reflective, even off concrete. Angle of sun , time of day, winter/ summer made a big difference.
No harm in doing your own research, but can anyone recall landing with a sunburn. I wonder if standing out on the grid waiting allows one to be expose to high level of reflected UV from all the polish wings. A hat may not be enough. I need to do some more sampling.

R