OPSIS measurement | WIOŚ station (background) | Local sources | Share of local sources | |
---|---|---|---|---|
µg/m3 | µg/m3 | µg/m3 | % | |
group 1 | 84 | 18 | 66 | 79 |
group 2 | 85 | 24 | 61 | 72 |
Difference: 7% |
month: | February | March | April | May | June | 5 months | |
---|---|---|---|---|---|---|---|
WIOŚ | maximum | 99 | 100 | 93 | 77 | 87 | 100 |
OPSIS | maximum | 130 | 132 | 120 | 107 | 104 | 132 |
WIOŚ | average | 34 | 29 | 19 | 20 | 17 | 24 |
OPSIS | average | 89 | 87 | 83 | 83 | 81 | 85 |
Earthworks | 5.5–50 |
Road roller | 40 |
Road roller/sweeper | 38 |
Asphalt sawing | 12 |
Asphalt smashing | 139 |
Plate compactor | 14 |
Asphalting | 98 |