The thermometer is only staying at 70 or 71 degrees and 31 humidity, which I can say right now the tank is certainly not a room temperature. It's definitely in Fahrenheit, so I may be buttoning down like you said.
Yes the probe is between the tank and the mat. It was quite difficult getting it in there as the mat is attached to the tank's bottom, but I did it. The UTH actually goes between 85-90, just to correct that. At least the temp gun is working, so I'll try that out in the tank.