My wife ran the dryer twice today. I can see the jump in RH and outdoor temp.
We took a bike ride to Bedford, and after we got back she did the second wash.
The drop in hot water temp on wash number #2 proceeds the RH spike from the dryer exhaust.
When we returned from our bike ride, the attic temp was almost 90F.
The basement stairs was a very warm 89.9 on the IR scanner.
Basement temp readings seem to be affected by the dryer.
I noticed the basement temps jumped with the humid air blast from the dryer.
The door of the dryer scanned at 90F.. That door is only 8 feet from the sensor.
Lesson learned:
Don't install sensors close to heat (or humid) sources.
It was a pretty mild day, but we had good solar. Best 'heating' of the basement so far.