Table 3.
Daily (24 hours noon-to-noon, central site) median air pollution concentration and meteorology in the four cities
| |
Helsinki |
Athens |
Amsterdam |
Birmingham |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |
10/2002-4/2004 |
10/2002-3/2004 |
10/2002-3/2004 |
11/2002-3/2004 |
|||||||||
| % missing | Median | Range | % missing | Median | Range | % missing | Median | Range | % missing | Median | Range | ||
| PNC |
104·cm-3 |
5.0 |
1.3 |
(0.2, 4.4) |
10.5 |
2.0 |
(0.3, 6.6) |
2.4 |
1.8 |
(0.8, 4.4) |
21.2 |
1.9 |
(0.2, 5.1) |
| PM10 |
μg·m-3 |
38.1 |
12.4 |
(0.2, 156.4) |
6.3 |
51.7 |
(8.5, 158.7) |
3.3 |
26.6 |
(7.4, 126.0) |
14.6 |
16.6 |
(2.8, 126.2) |
| PM2.5 |
μg·m-3 |
34.6 |
7.4 |
(0.3, 33.2) |
6.3 |
22.7 |
(2.4, 79.1) |
3.1 |
16.7 |
(4.0, 103.4) |
12.8 |
8.4 |
(0.7, 71.9) |
| PM10-2.5 |
μg·m-3 |
39.1 |
4.6 |
(0.0, 152.6) |
6.7 |
28.8 |
(0.7, 126.4) |
3.7 |
9.4 |
(0.9, 24.2) |
15.6 |
6.9 |
(0.3, 118.9) |
| Absorbance |
10-5·m-1 |
38.9 |
1.2 |
(0.2, 3.8) |
6.3 |
3.5 |
(0.9, 8.4) |
3.1 |
1.9 |
(0.5, 7.2) |
12.8 |
1.3 |
(0.2, 4.9) |
| NO2 |
μg·m-3 |
1.4 |
22.7 |
(4.5, 77.9) |
27.4 |
39.9 |
(11.8, 110.9) |
0.4 |
38.4 |
(10.4, 97.3) |
0.2 |
34.4 |
(7.3, 83.3) |
| Ozone |
μg·m-3 |
1.7 |
42.5 |
(4.1, 93.2) |
11.8 |
46.9 |
(4.7, 108.2) |
9.4 |
33.1 |
(0.9, 104.3) |
0.0 |
37.3 |
(0.9, 106.6) |
| Temperature |
°C |
0.0 |
2.0 |
(−22.8, 25.6) |
0.0 |
15.0 |
(−3.1, 33.2) |
0.0 |
9.1 |
(−6.1, 25.3) |
0.0 |
9.2 |
(−1.4, 26.9) |
| Rel. humidity | % | 0.0 | 80.7 | (36.5, 100.0) | 0.0 | 66.1 | (21.8, 93.2) | 0.0 | 80.8 | (38.5, 98.7) | 0.0 | 79.3 | (45.8, 97.9) |