On 5/19/13 I returned to Ruth’s home. I had previously measured increased activity in her basement.
This time I had two Geiger counters, the Mazur 8000, referred to as A, and the Mazur 9000, referred to as B.
In the basement for A for 8 hours
Upstairs for 1 h, 20m for A
This data once more shows that there are counts nearly twice normal in the basement. I have spoken with Ruth about checking her basement for radon.
On 7/9/13 at home
For A the sample is 33 days
For B the sample was 25 days