Ah, I didn't know that. Interesting.When you set your oven temperature to whichever value,, oven is trying to deliver that to center of oven.
Here's what I did. The oven is a regular electric, and about 45 years old. I have the racks set so that one is in the middle, the other one is just below it. I put the thermometer in the center, left-to-right, about 3/4 of the way to the back. I let the oven go through two heating cycles.
I checked it, and wow, it read over 400 with the oven set at 325. I moved the thermometer to about 4 inches from the front, left the oven door open long enough for it to come on to reheat. Closed the door, let it cycle again.
I checked it again. Still about 400. So I turned the oven down to 275, moved the thermometer to the side, put the zucchini bread in, and baked the bread, as I was running into a time crunch and the bread had to bake for 45-50 minutes. The thermometer read between 350 and 375.
My actual time on the bread was 55 minutes.
The thermometer was about $20, IIRC, so I should have looked into it more and bought a better quality one that could be adjusted.