|
SO2 |
Time period |
Limit value |
Lower assessment threshold |
Upper assessment threshold |
|
1. Hourly value for protection of human health |
1 hour |
350
The value must not be exceeded more than 24 times/year |
- |
- |
|
2. 24-hour value for protection of human health |
24 hours |
125
The value must not be exceeded more than 3 times/year |
50
40% of 24 hour limit value |
75
60% of 24 hour limit value |
|
3. Annual value for protection of ecosystems. Not to be applied close to sources. |
1 year and during winter season (1 oct-31 march) |
20 |
8
40% of limit value for winter season |
12
60% of limit value for winter season |
|
NO2 |
Time period |
Limit value |
Lower assessment threshold |
Upper assessment threshold |
|
1. Hourly value for protection of human health |
1 hour |
200
The value must not be exceeded more than 18 times/year |
100
50% of hourly limit value |
140
70% of hourly limit value |
|
2. Annual value for protection of human health |
1 year |
40 |
26
65% of limit value |
32
80% of limit value |
|
3. Annual value for protection of vegetation. Not to be applied close to sources. |
1 year |
30
As the sum of nitrogen oxides, NO2+NO |
19.5
65% of limit value |
24
80% of limit value |