Table 3.
Average measured1 and modelled2 winter mean levels of NO2, presented separately for each city.
| Umea | Uppsala | Gothenburg | |
| Modelled level at central monitoring site (μg/m3) | 20.3 | 17.6 | 28.5 |
| Measured level at central monitoring site (μg/m3) | |||
| 2001–2002 | NAa | 13.0 | 27.3 |
| 2002–2003 | 22.8 | 17.0 | 31.8 |
| 2003–2004 | 18.1 | 15.0 | 27.1 |
| 2004–2005 | 21.7 | 15.3 | 27.7 |
| Modelled levels of NO2 (μg/m3) at each study subjects home address (IQRb, Min-Maxc) | 16.9 (4.4) (11.5–24.9) | 16.2 (2.8) (9.6–25.9) | 29.7 (7.7) (16.5–53.9) |
aNA = not applicable: no measurements available; bIQR = Inter Quartile Range; cMinimum and maximum value.
1 Urban background levels of NO2 measured at a central monitoring station within each city.
2 Calculated with a meteorological dispersion model within each city.