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New York City
Indoor Radon Estimates
Percent Homes Above 4 pCi/L
June 1999
| Town or City |
homes measured |
living area* |
basement** |
||
|---|---|---|---|---|---|
| best estimate (%) |
range # (%) |
best estimate (%) |
range # (%) |
||
| New York (Manhattan) | 0.9 | (0.5 - 1.4) | 4 | (3 - 6) | |
| Bronx | 1.7 | (1.0 - 2.6) | 8 | (6 - 10) | |
| Kings (Brooklyn) | 1.7 | (1.4 - 2.1) | 11 | (9 - 12) | |
| Queens | 0.6 | (0.5 - 0.8) | 3 | (3 - 4) | |
| Richmond (Staten Island) | 1.3 | (0.9 - 1.8) | 5 | (4 - 6) | |
* Long-term measurement, 90 days to one year.
**Short-term measurement, typically 2 to 7 days.
# Uncertainty range of one sigma corresponds to a 68% confidence interval.
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New York State Department of Health - Wadsworth Center