| År | Station | Nationell stationskod | Klassificering | Inlet-id | Medel Bensen µg/m³ (MKN=5, Miljömål=1) | Antal dygn | Antal timmar | Tidsupplösning |
|---|---|---|---|---|---|---|---|---|
| 2000 | Karlstad | 127 | Urban Background | 152 | 2.03 | 177 | Week | |
| 2000 | Kramfors | 6780 | Urban Background | 1372 | 2.76 | 93 | Week | |
| 2000 | Örnsköldsvik | 620 | Urban Background | 237 | 2.60 | 177 | Week | |
| 1999 | Karlstad | 127 | Urban Background | 152 | 2.25 | 186 | Week | |
| 1999 | Kramfors | 6780 | Urban Background | 1372 | 2.63 | 89 | Week | |
| 1999 | Örnsköldsvik | 620 | Urban Background | 237 | 3.86 | 176 | Week |