Table 2.
Exposure quantity ranges in cohort with units specified.
| Exposure | Mean (SD) | Range | Unit |
|---|---|---|---|
| NH4, PM2.5 | 1.050 (0.160) | (0.147, 2.13) | Micrograms/m^{3} |
| Black Carbon, PM2.5 | 0.785 (0.120) | (0.212, 3.023) | Micrograms/m^{3} |
| Nitrate, PM2.5 | 0.722 (0.297) | (0.041, 5.459) | Micrograms/m^{3} |
| Organic Matter, PM2.5 | 3.437 (0.522) | (1.000, 10.182) | Micrograms/m^{3} |
| SO4, PM2.5 | 3.154 (0.390) | (0.323, 4.459) | Micrograms/m^{3} |
| Sea Salt, PM2.5 | 0.286 (0.150) | (0.012, 2.723) | Micrograms/m^{3} |
| Soil, PM2.5 | 0.442 (0.116) | (0.118, 2.894) | Micrograms/m^{3} |
| CO | 0.343 (0.059) | (0.208, 0.757) | ppm |
| NO2 | 6.891 (2.664) | (1.394, 29.393) | ppb |
| O3 | 42.691 (7.719) | (29.480, 60.012) | ppb |
| PM10 | 15.265 (4.416) | (5.444, 44.959) | Micrograms/m^{3} |
| SO2 | 1.874 (0.785) | (0.708, 7.067) | ppb |
| Benzene | 19.820 (235.69) | (0, 12643.11) | Pounds per 5 km radius |
| Ethylbenzene | 33.49 (372.06) | (0, 14947.96) | Pounds per 5 km radius |
| Toluene | 839.47 (5268.06) | (0, 181626.3) | Pounds per 5 km radius |
| Xylene | 356.90 (1715.24) | (0, 47517.2) | Pounds per 5 km radius |
| Road density | 1444.89 (1505.21) | (0, 10530.76) | Km |