Im wondering where I should place my hygrometer. It is an analog, stick to the glass type.

Just created a new environment for my bp. She went from a 10g to a 'very cluttered' 55g. I have aspen on the bottom altho it would have been coconut fiber but walked out of the store without it. Next trip. I introduced a large h2o dish directly in center, two hides but not identical and various fossils/driftwood on both the hot & cold side. Ambiant temp is around 83f & the hot side uth is set at 90f. I have a screen top with a fishtank light hood with day bulbs over the back half lengthwise(I kno they dont need the light but its more for my viewing pleasure), and a 50w red heat bulb directly over water bowl..

Where should I measure the ambient air temps & tank hygrometer levels from?
Center? Hotside?...

Thx for any education