The table below shows some radon levels measured in resi-dences.
For values greater than or equal to 4 pCi/L, action should be taken
to reduce the concentration of radon gas. For values greater than or
equal to 3 pCi/L, retesting is recommended.
| Location | Value, pCi/L | Comments |
| DB's house, basement | 15.6 | Action should be taken! |
| ID's house, 2nd floor bedroom | 3.7 | Should be retested. |
| FJ's house, 1st floor living room | 0.9 | No action required. |
| MB's house, 2nd floor bedroom | 2.9 | No action required. |