Another Temperature Question

This may sound like a stupid question, but when we are talking about temperatures on the warm side of the tank, are we talking about surface temps or air temp? The tank floor above my UTH is around 94 F, but the air temp on that side is only around 80.

The hot and cool side temps are taken at floor level. Ambiant temps are the general air temp, which should be about 82. I usually place my temperature probes right under the hides since that is where they spend the majority of their time.

O.K. That is what I have been assuming, but you know what happens when you assume.........


Thanks for your help!