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Distributions of 3-year average air pollution exposures across person-years in Medicare cohort from 2004 to 2016.
| Pollutant | Mean ± SD | Minimum | 25th Percentile | Median | 75th Percentile | Maximum |
|---|---|---|---|---|---|---|
| PM2.5 (μg/m3) | 9.6 ± 2.5 | 0.8 | 8.0 | 9.5 | 11.2 | 24.5 |
| NO2 (ppb) | 18.9 ± 8.5 | 0.6 | 12.5 | 17.1 | 24.0 | 79.2 |
| Warm-season ozone (ppb) | 42.5 ± 5.4 | 20.7 | 39.8 | 42.6 | 45.4 | 79.4 |
| PR (mBq/m3) | 9.8 ± 1.0 | 5.9 | 9.2 | 10.0 | 10.5 | 14.4 |
