From: Assessing additive effects of air pollutants on mortality rate in Massachusetts
 | Long-term PM2.5 (μg·m− 3) a | Short-term PM2.5 (μg·m− 3) b | Long-term O3 (ppb) a | Short-term O3 (ppb) b,c | Long-term NO2 (ppb) a | Short-term NO2 (ppb) b |
---|---|---|---|---|---|---|
Mean ± SD | 9.0 ± 1.9 | 8.9 ± 5.4 | 37.5 ± 3.0 | 32.6 ± 10.4 | 20.4 ± 8.3 | 20.5 ± 11.6 |
Min | 3.3 | 0.1 | 25.7 | 7.9 | 3.2 | 0.2 |
5th percentile | 5.8 | 3.0 | 32.2 | 27.6 | 8.6 | 5.3 |
25th percentile | 7.6 | 5.2 | 35.6 | 36.7 | 14.1 | 11.3 |
Median | 9.0 | 7.5 | 37.7 | 43.2 | 19.2 | 18.7 |
75th percentile | 10.1 | 11.2 | 39.6 | 49.6 | 26.1 | 27.9 |
95th percentile | 12.1 | 19.4 | 42.1 | 61.6 | 35.0 | 41.6 |
Max | 16.4 | 65.3 | 47.1 | 116.0 | 64.6 | 119.0 |