| År | Station | Nationell stationskod | Klassificering | Inlet-id | Medel Bensen µg/m³ (MKN=5, EU2030=3.4, Miljömål=1) | Antal dygn | Antal timmar | Tidsupplösning |
|---|---|---|---|---|---|---|---|---|
| 1999 | Kramfors | 6780 | Urban Background | 1372 | 2.63 | 89 | Week | |
| 1999 | Timrå | 144 | Urban Background | 153 | 2.22 | 183 | Week | |
| 1999 | Örnsköldsvik | 620 | Urban Background | 237 | 3.86 | 176 | Week |