| År | Station | Nationell stationskod | Klassificering | Inlet-id | Medel Bensen µg/m³ (MKN=5, Miljömål=1) | Antal dygn | Antal timmar | Tidsupplösning |
|---|---|---|---|---|---|---|---|---|
| 2001 | Bollnäs | 1714 | Urban Background | 1313 | 2.76 | 91 | Week | |
| 2001 | Hudiksvall | 124 | Urban Background | 1347 | 3.02 | 175 | Week | |
| 1997 | Hudiksvall | 124 | Urban Background | 1347 | 3.84 | 183 | Week |