| År | Station | Nationell stationskod | Klassificering | Inlet-id | Medel Bensen µg/m³ (MKN=5, Miljömål=1) | Antal dygn | Antal timmar | Tidsupplösning |
|---|---|---|---|---|---|---|---|---|
| 2004 | Bollnäs | 1714 | Urban Background | 1313 | 1.41 | 87 | Week | |
| 2004 | Hudiksvall | 124 | Urban Background | 1347 | 1.84 | 184 | Week | |
| 2004 | Ljusdal | 11708 | Urban Background | 1385 | 1.80 | 95 | Week |