Radon gas was only 2 ppm.. (Normal in my house), so I've moved the sensor to another new sump hole.
It takes a couple of weeks to get a good reading.
I've been watching the temperature in the sumps, which are pretty dry today.
On average, the three deep holes are showing 56.2F this week.
Got the same 56.2 temp on the floor (surface) at the far end of the house, from the hot-water boiler..
Tap water is now at 55.7F and I'll be interested to see what happens
after we get water in the sumps again..
Maybe higher ground water levels will increase the basement temps?
Or, maybe as the winter wears on, it will drop down to the low 50s.?.