Table 2 Summary statistics for annual PM2.5, warm-season O3, and annual NO2 concentrations, 2000–2016
Statistics | PM2.5 (μg·m−3) | O3 (ppb) | NO2 (ppb) |
|---|---|---|---|
Mean ± SD | 9.85 ± 3.17 | 39.34 ± 4.03 | 17.30 ± 9.66 |
Decile | |||
 10% | 5.80 | 38.07 | 7.10 |
 20% | 7.28 | 40.97 | 9.09 |
 30% | 8.23 | 42.61 | 10.90 |
 40% | 9.00 | 43.86 | 12.83 |
 50% | 9.75 | 45.02 | 14.99 |
 60% | 10.53 | 46.38 | 17.55 |
 70% | 11.41 | 47.96 | 20.70 |
 80% | 12.46 | 49.93 | 24.93 |
 90% | 13.95 | 52.37 | 31.07 |