DATE: 2022-02-12
TIME: 16:19 UTC

Yesterday, before going to work, I've gone out for a walk and taken
with me the RiumGM geiger counter. I usually make some roeadings 
periodically but yesterday I've measured 0,42uSv/h and up to 0,5
that is about 4 times the background radiation of the zone.
Probably this measure was the radon gas but it was really quite
high. 
As expected from radon and its decay elements, after few hours
all gone back to normal.

To be more precise, we always do not measure radon with geiger
counters but we catch the decays of the radon subproducts that
are Beta emitters.

Have a nice life!