Month
Average O3 (20:00- 08:00 h) ppbv
Average O3 (08:00-20:00 h) ppbv
O3 minimum (ppbv)
O3 maximum (ppbv)
Rate of increase (08:00-11:00 h) ppbv/h
Rate of decrease (17:00-19:00 h) ppbv/h
January
4.4±2.0
29.3±4.3
2.8
44.6
8.2
-11.9
February
4.7±1.9
26.5±4.2
3.0
40.6
7.5
-10.0
March
5.2±1.8
22.6±3.9
3.5
36.1
6.6
-5.9
April
4.9±1.8
20.1±3.8
3.9
31.9
4.2
-6.2
May
5.7±1.9
21.5±4.1
4.5
31.2
5.2
-7.0
June
3.6±1.2
13.0±3.4
2.5
21.4
4.1
-2.4
July
2.8±1.2
11.0±3.4
1.9
16.4
2.9
-3.0
August
4.1±1.3
11.3±3.4
2.3
18.6
2.4
-2.7
September
4.3±1.4
13.5±3.4
2.6
22.4
2.2
-3.3
October
5.5±1.4
15.2±3.6
3.7
26.1
2.0
-3.5
November
5.2±1.5
24.4±3.9
37.1
5.3
-7.5
December
4.1±2.0
31.9±4.7
2.7
46.9
9.2
-14.0
