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Legend (Airbase/Carbon_monoxide_CO)

Annual Mean (1)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily values (2)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily maximum value (3)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on hourly values (4)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily values (6)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily maximum value (7)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on hourly values (8)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily values (10)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily maximum value (11)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on hourly values (12)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily values (14)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily maximum value (15)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on hourly values (16)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily values (18)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on daily maximum value (19)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
based on hourly values (20)
≤0.5 ≤0.5
0.5 - 1.0 0.5 - 1.0
1.0 - 2.0 1.0 - 2.0
2.0 - 2.5 2.0 - 2.5
>2.5 >2.5
Airbase_Stations (21)
Background Background
Industrial Industrial
Traffic Traffic
Unknown Unknown
<all other values> <all other values>