Distribution of estimated air pollution concentration based on monitoring stations and road intensity indicators (N=106 678)
| Exposure variable | Mean (SD) | Median (Q1–Q3) | Range (minimum–maximum) |
|---|---|---|---|
| Pollutant | |||
| PM2.5 (μg/m3) | 27.51 (3.40) | 27.79 (25.09–30.27) | 16.03 (19.11–35.14) |
| PM10 (μg/m3) | 47.83 (5.59) | 47.34 (45.55–51.74) | 30.18 (33.74–63.92) |
| NO2 (ppb) | 21.14 (4.90) | 22.13 (17.41–24.70) | 26.48 (7.12–33.30) |
| NOx (ppb) | 37.24 (16.16) | 35.64 (26.44–49.21) | 88.62 (0.04–88.66) |
| CO (ppm) | 0.60 (0.14) | 0.61 (0.49–0.70) | 0.68 (0.26–0.94) |
| O3 (ppb) | 27.18 (3.08) | 26.83 (25.22–28.65) | 22.52 (17.82–40.34) |
| Road intensity indicator | |||
| Length of all roads within 500 m (m) | 12 896 (6186) | 12 868 (8270–17 363) | 28 267 (0–28 267) |
| Length of major roads within 500 m (m) | 5956 (2753) | 5959 (4076–7549) | 18 050 (0–18 050) |
CO, carbon monoxide; NO2, nitrogen dioxide; NOx, nitrogen oxides; O3, ozone; PM10, particulate matter of 10 μm or less in aerodynamic diameter; PM2.5, particulate matter of 2.5 μm or less in aerodynamic diameter; Q1, first quartile; Q3, third quartile.