The numbers on the left are where the temperature SHOULD be (70), but the numbers on the right tell you where the temperature in the house ACTUALLY IS... Can you see the little red arrow (on the right) pointing to 90! Actually it was flittering and jiggling as though trying to climb to 100 but as you can see it doesn't record that high up. This was at midnight last night. I think I've done nothing but sweat for four days. Mmmmm... summer in Texas!