It’s time for the West side of the US to be featured here with this new uRADMonitor unit joining in from Arizona. Live data can be seen here.

Here is a quick comparison on its current measurements, and the initial ones before sending the unit:

At its new location in Arizona, the unit shows a cyclic variation in the background radiation field, with a period of 24 hours. The minimum is reached at 4:30am local hour, and the maximum 12 hours later, at 16:30 local hour:

The values for the other parameters are included below:

Temperature:

Voltage on Geiger tube:

Duty cycle for high voltage inverter:

And a comparison showing both temperature (cyan) and radiation in cpm (red) on one chart just to observe any possible relation:

The data is too short for now, but more tests will be performed and this phenomenon investigated further.