Table 1 Summary statistics of PM 2.5 (μg/m 3 ), BC (abs), and NO 2 (ppb) concentrations, by season, comparing temporal adjustment methods
|  | Urban and Background Adjustment (n = 36) | Background-only Temporal Adjustment (n = 36) | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | Mean | SD | Minimum | Maximum | Mean | SD | Minimum | Maximum |
Summer PM2.5 (μg/m3) | 14.00 | 3.68 | 1.28 | 21.06 | 14.24 | 3.97 | 1.33 | 22.71 |
Summer BC (abs) | 1.58 | 0.85 | 0.02 | 4.82 | 1.61 | 0.91 | 0.02 | 4.64 |
Summer NO2 (ppb) | 10.75 | 3.36 | 5.12 | 17.25 | 12.30 | 6.50 | 4.46 | 27.72 |
Winter PM2.5 (μg/m3) | 12.53 | 2.28 | 8.28 | 16.98 | 12.64 | 2.52 | 8.02 | 20.10 |
Winter BC (abs) | 1.31 | 0.55 | 0.63 | 2.99 | 1.31 | 0.53 | 0.70 | 2.72 |
Winter NO2 (ppb) | 17.93 | 3.90 | 9.93 | 25.60 | 18.69 | 6.21 | 10.90 | 34.10 |