Delawarebill is correct. Temperature, humidity and altitude effect a lot of things that we do in our shops. What works here in the high desert may not work the same in other places. When someone post a problem with paint, for instance, it helps to know these factors to be able to help out the person asking. This also applies to fuel systems and probably a bunch of other things.
I live in Paulden , AZ and own a 82' Chevy K-10 (Silverado) 1/2 ton with a 3 " suspension + 3" body lift, running a small block 350 with a edelbrock performer carb & intake, w/ electric fans & MSD HEI. Kept the stock 3 speed Munci with granny gear.