Check out this thread for some specific numbers related to your environment What is the optimal temp and humidity for Veg and Flower? .
I noticed you’ve got a couple min/max thermometers. If you’re looking for something that will give you a bit more useful information, check out the “Smart Home Weather Station” from netatmo. It measures and graphs temperature, humidity, pressure, sound and CO2 ppm in an app. That way you can be sure your environment is staying exactly where you set it and focus on other things to experiment with. https://shop.netatmo.com/cad_en/weatherstation.html