Okay, well then most of what I said might have just gone out the window.  ;D  It might be just the nature of the droplet sizes coming from that spray nozzle and/or whatever they use in that product. (IE: like something to make it 'fast dry' etc.)

I don't know exact numbers, but what you have sounds fairly normal?

I just know if it's really hot and dry here I can get a similar effect under my lights, which are quite bright and only add to the heat factor. Where if it's a bit humid here, my lights have no effect at all.