Table 3 Distribution of personal exposures to air pollution
| Â | Â | Overall | Route | ||||
|---|---|---|---|---|---|---|---|
Air pollutant | n | Mean (SD) | Median (Range) | IQR | High-Traffic mean (SD) | Low-Traffic mean (SD) | Indoors mean (SD) |
Personal Exposures | |||||||
UFPs (count/cm3) | 141 | 16,771 (10,302) | 14,300 (3720-50,900) | 9150-20,000 | 21,234 (9998) | 18,740 (10,143) | 9800 (6688) |
Black Carbon (ng/m3) | 140 | 1725 (1406) | 1237 (33-8440) | 914-2074 | 2260 (1692) | 1248 (910) | 1608 (1286) |
PM2.5 (μg/m3) | 143 | 14.2 (13) | 8.63 (3.1-70.8) | 4.2-19.4 | 15.7 (15.9) | 13.4 (13.8) | 13.4 (9.4) |
NO2 (ppb) | 136 | 48.0 (18) | 46.8 (2.3-131) | 35.2-57.0 | 48.9 (17.5) | 50.9 (21.2) | 43.3 (14.9) |
O3 (ppb) | 136 | 50.1 (16) | 47.7 (17-101) | 38.0-62.3 | 55.7 (12.1) | 56.7 (17.2) | 34.4 (7.9) |
Regional Air pollution Concentrations Prior to Study Periods | |||||||
PM2.55 (μg/m3) (24 hours) | 134 | 14.5 (10.9) | 11.5 (1.88-52.9) | 7.13-17.6 |  |  |  |
NO2 (ppb) (24 hours) | 143 | 7.02 (2.80) | 6.41 (1.42-14.1) | 5.05-8.34 | Â | Â | Â |
O3 (ppb) (24 hours) | 143 | 26.9 (7.41) | 26.4 (11.2-43.9) | 21.1-31.6 | Â | Â | Â |
PM2.5 (μg/m3) (5 days) | 132 | 14.5 (7.82) | 13.5 (4.31-34.6) | 7.63-20.2 |  |  |  |
NO2 (ppb) (5 days) | 143 | 6.53 (1.20) | 6.59 (4.03-9.13) | 5.71-7.51 | Â | Â | Â |
O3 (ppb) (5 days) | 143 | 27.4 (5.24) | 26.5 (16.1-38.5) | 24.4-30.4 | Â | Â | Â |