Data over an afternoon

I collect this data over an afternoon in South Louisiana. I am creating marketing material that can be used by staff as well as teach the crews. It really is great how quick a patch test can be done these days. I commend the software designers on the GUI calibration. (Thanks Harold) I like to shake the hand of the man that made it. I
don't even have to carry my RPN calculator with me any more. Of course I do any way LOL.