Ambient Radioactivity 2007 Graphs
- December 2007 (nice rain peak Dec 16)
- November 2007
- October 2007
- September 2007 (Diurnal patterns in the 14 to 22 cpm range were recorded when the house windows were open during cooler weather (e.g. Sept. 12 to 21). Higher patterns were recorded when the house was closed and AC was used during hotter weather.)
- August 2007
- July 2007
- June 2007
- May 16 - 30 2007 (Baseline increase 5/26 caused by closing windows and turning on AC).
- May 2007
- April 2007
- .Testing period of March 8 - 11 2007 (Independent commercial liquid scintillation Rn test #2 (same company) by method EPA 402-R-92-004 from Mar 8 2007 7:10 pm (EST) to Mar 11 2007 8:36 pm (DST) which is shown as 7:36 pm (EST), mean 17.1 cpm, was taken in identical location as the February Rn test. These were reported to record 1.2 pCi/L and 0.4 pCi/L. The testing company provided no uncertainty evaluation in their report.)
- March 2007 (first large peak coincided with first rainy weather event after long freeze period, and strong diurnal pattern is lost as outdoor temperatures warm up.)
- . Week of February 17 - 24 2007 (nice diurnal pattern)
- . Week of February 04 - 11 2007 (Independent commercial liquid scintillation Rn test #1 by method EPA 402-R-92-004 from Feb 4 18:42 to Feb 8 18:42, mean 16.1 cpm, was as follows: Two Rn canisters 6" apart and next to RM-70 were reported to record 1.1 pCi/L and 1.7 pCi/L. The testing company provided no uncertainty evaluation in their report.)
- February 2007 (strong diurnal pattern)
- . Week of Jan 22 - 29 2007 (nice diurnal pattern).
- . Jan 16 - 23 2007 tests (2 flat spots were Rn exclusion test like done in Dec 2006)
- January 2007 (with tests).
