Table 1.
Radon-related variables measured in each home with two occupied rooms that had a clean, unobstructed glass surface.
| Variable namea | Measured | Integration/duration | Season | Detector type |
|---|---|---|---|---|
| Long-term radon | Radon gas concentration | 90 d | Winter-spring/summer-fall | Alpha track detector (ATD) |
| Deposited 218Po, deposited 214Po | Surface-deposited concentrations | 90 d | Winter-spring/summer-fall | Retrospective radon detector (RRD) |
| Short-term radon | Radon gas concentration | 3 to 7 d | End of each 90-d period | Electronic ion chamber (EIC) |
| Unattached PAEC | 218Po, 214Po collected on screen (<5 nm) | 3 to 7 d | End of each 90-d period | Airborne radon progeny detector (ARPD) |
| Attached PAEC | 218Po, 214Po collected on filter (>5 nm) | 3 to 7 d | End of each 90-d period | Airborne radon progeny detector (ARPD) |
a
The variables Pdose and Jdose were calculated from the unattached and attached PAEC (Sun et al. 2009).