| År | Station | Nationell stationskod | Klassificering | Inlet-id | Årsmedel SO2 µg/m³ (NUT=8, ÖUT=12, MKN=20, EU2030=20) | Medelvärde vinter SO2 µg/m³ (NUT=8, ÖUT=12, MKN=20) | Antal dygn | Antal dygn SO2 > 125 µg/m³ (MKN=3) | Antal dygn SO2 > 100 µg/m³ (MKN=7) | Antal dygn SO2 > 75 µg/m³ (ÖUT=3) | Antal dygn SO2 > 50 µg/m³ (NUT=3, EU2030=18) | Max dygn SO2 µg/m³ | Antal timmar | Antal timmar SO2 > 350 µg/m³ (MKN=24, EU2030=3) | Antal timmar SO2 > 200 µg/m³ (MKN=175) | Antal timmar SO2 > 100 µg/m³ (NUT=175) | Antal timmar SO2 > 150 µg/m³ (ÖUT=175) | 98%il timme SO2 µg/m³ | Max timme SO2 µg/m³ | Tidsupplösning |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | Sollefteå Torggatan | 395030 | Urban Background | 5623 | 0.22 | 0.18 | 114 | Month | ||||||||||||
| 2023 | Sollefteå Torggatan | 395030 | Urban Background | 5623 | 0.15 | 56 | Month | |||||||||||||
| 2023 | Timrå | 144 | Urban Background | 5123 | 0.33 | 0.35 | 87 | Month | ||||||||||||
| 2022 | Timrå | 144 | Urban Background | 5123 | 0.36 | 56 | Month | |||||||||||||
| 2019 | Timrå | 144 | Urban Background | 5123 | 0.32 | 0.41 | 121 | Month | ||||||||||||
| 2018 | Timrå | 144 | Urban Background | 5123 | 0.54 | 62 | Month | |||||||||||||
| 2012 | Sundsvall Stadshuset | 15618 | Urban Background | 1109 | 0.70 | 0.71 | 302 | Month | ||||||||||||
| 2012 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.96 | 30 | Month | |||||||||||||
| 2011 | Sundsvall Stadshuset | 15618 | Urban Background | 1109 | 1.29 | 1.05 | 332 | Month | ||||||||||||
| 2011 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.66 | 0.88 | 90 | Month | ||||||||||||
| 2010 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.97 | 1.06 | 90 | Month | ||||||||||||
| 2009 | Sundsvall Stadshuset | 15618 | Urban Background | 1109 | 0.94 | 0.83 | 278 | Month | ||||||||||||
| 2009 | Timrå Tätort | 11616 | Urban Background | 1121 | 1.02 | 0.77 | 183 | Month | ||||||||||||
| 2008 | Sundsvall Stadshuset | 15618 | Urban Background | 1109 | 0.80 | 0.77 | 359 | Month | ||||||||||||
| 2008 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.78 | 0.87 | 183 | Month | ||||||||||||
| 2007 | Sundsvall | 8784 | Urban Background | 187 | 2.13 | 2.33 | 302 | 0.00 | 0.00 | 0.00 | 0.00 | 14.31 | 7281 | 0.00 | 0.00 | 1.00 | 0.00 | 10.27 | 118.64 | Hour |
| 2007 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.82 | 0.70 | 183 | Month | ||||||||||||
| 2006 | Sundsvall | 8784 | Urban Background | 1108 | 2.62 | 3.33 | 310 | 0.00 | 0.00 | 0.00 | 0.00 | 14.60 | 7416 | 0.00 | 0.00 | 0.00 | 0.00 | 11.57 | 57.03 | Hour |
| 2006 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.84 | 0.91 | 183 | Month | ||||||||||||
| 2005 | Sundsvall | 8784 | Urban Background | 1108 | 3.60 | 1.59 | 318 | 0.00 | 0.00 | 0.00 | 0.00 | 11.38 | 8107 | 0.00 | 0.00 | 0.00 | 0.00 | 12.30 | 51.05 | Hour |
| 2005 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.69 | 0.59 | 183 | Month | ||||||||||||
| 2005 | Örnsköldsvik | 620 | Urban Background | 1796 | 1.13 | 1.09 | 58 | Month | ||||||||||||
| 2004 | Sundsvall | 8784 | Urban Background | 1108 | 1.85 | 1.66 | 164 | 0.00 | 0.00 | 0.00 | 0.00 | 15.19 | 5323 | 0.00 | 0.00 | 0.00 | 0.00 | 8.24 | 68.33 | Hour |
| 2004 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.59 | 0.75 | 180 | Month | ||||||||||||
| 2004 | Örnsköldsvik | 620 | Urban Background | 1796 | 1.07 | 1.00 | 184 | Month | ||||||||||||
| 2003 | Sundsvall | 8784 | Urban Background | 1108 | 2.00 | 1.81 | 307 | 0.00 | 0.00 | 0.00 | 0.00 | 13.36 | 7283 | 0.00 | 0.00 | 0.00 | 0.00 | 8.70 | 49.30 | Hour |
| 2003 | Timrå | 144 | Urban Background | 154 | 0.54 | 0.50 | 88 | 0.00 | 0.00 | 0.00 | 0.00 | 2.40 | Day | |||||||
| 2003 | Timrå Tätort | 11616 | Urban Background | 1121 | 0.85 | 92 | Month | |||||||||||||
| 2003 | Örnsköldsvik | 620 | Urban Background | 1796 | 0.90 | 87 | Month | |||||||||||||
| 2003 | Örnsköldsvik Tätort | 8179 | Urban Background | 1160 | 2.07 | 1.34 | 61 | Month | ||||||||||||
| 2002 | Sundsvall | 8784 | Urban Background | 1108 | 1.81 | 1.13 | 288 | 0.00 | 0.00 | 0.00 | 0.00 | 8.17 | 6921 | 0.00 | 0.00 | 0.00 | 0.00 | 9.20 | 31.36 | Hour |
| 2002 | Timrå | 144 | Urban Background | 154 | 0.46 | 0.63 | 181 | 0.00 | 0.00 | 0.00 | 0.00 | 1.70 | Day | |||||||
| 2002 | Örnsköldsvik Tätort | 8179 | Urban Background | 1160 | 1.00 | 1.06 | 184 | Month | ||||||||||||
| 2001 | Sundsvall | 8784 | Urban Background | 1108 | 2.18 | 2.87 | 234 | 0.00 | 0.00 | 0.00 | 0.00 | 8.99 | 6257 | 0.00 | 0.00 | 0.00 | 0.00 | 10.42 | 36.98 | Hour |
| 2001 | Timrå | 144 | Urban Background | 154 | 0.86 | 0.69 | 181 | 0.00 | 0.00 | 0.00 | 0.00 | 4.10 | Day | |||||||
| 2001 | Örnsköldsvik Tätort | 8179 | Urban Background | 1160 | 1.49 | 1.69 | 183 | Month | ||||||||||||
| 2000 | Sundsvall | 8784 | Urban Background | 1108 | 3.15 | 3.30 | 312 | 0.00 | 0.00 | 0.00 | 0.00 | 11.02 | 7402 | 0.00 | 0.00 | 0.00 | 0.00 | 13.28 | 53.78 | Hour |
| 2000 | Timrå | 144 | Urban Background | 154 | 0.59 | 0.70 | 183 | 0.00 | 0.00 | 0.00 | 0.00 | 2.90 | Day | |||||||
| 2000 | Örnsköldsvik Tätort | 8179 | Urban Background | 1160 | 1.40 | 1.38 | 184 | Month | ||||||||||||
| 1999 | Timrå | 144 | Urban Background | 154 | 0.90 | 0.90 | 181 | 0.00 | 0.00 | 0.00 | 0.00 | 3.40 | Day | |||||||
| 1999 | Örnsköldsvik Tätort | 8179 | Urban Background | 1160 | 1.33 | 93 | Month | |||||||||||||
| 1998 | Timrå | 144 | Urban Background | 154 | 0.99 | 0.94 | 182 | 0.00 | 0.00 | 0.00 | 0.00 | 7.80 | Day | |||||||
| 1997 | Timrå | 144 | Urban Background | 154 | 0.90 | 0.94 | 182 | 0.00 | 0.00 | 0.00 | 0.00 | 9.80 | Day | |||||||
| 1996 | Timrå | 144 | Urban Background | 154 | 0.96 | 1.11 | 181 | 0.00 | 0.00 | 0.00 | 0.00 | 4.00 | Day | |||||||
| 1995 | Timrå | 144 | Urban Background | 154 | 1.31 | 1.29 | 180 | 0.00 | 0.00 | 0.00 | 0.00 | 10.00 | Day | |||||||
| 1994 | Timrå | 144 | Urban Background | 154 | 1.40 | 1.97 | 176 | 0.00 | 0.00 | 0.00 | 0.00 | 12.00 | Day | |||||||
| 1993 | Härnösand | 7133 | Urban Background | 1006 | 2.63 | 2.59 | 90 | 0.00 | 0.00 | 0.00 | 0.00 | 16.80 | Day | |||||||
| 1993 | Kramfors | 6780 | Urban Background | 1032 | 2.11 | 2.28 | 74 | 0.00 | 0.00 | 0.00 | 0.00 | 12.40 | Day | |||||||
| 1993 | Timrå | 144 | Urban Background | 154 | 1.93 | 1.90 | 180 | 0.00 | 0.00 | 0.00 | 0.00 | 13.70 | Day | |||||||
| 1992 | Härnösand | 7133 | Urban Background | 1006 | 2.38 | 2.36 | 175 | 0.00 | 0.00 | 0.00 | 0.00 | 6.10 | Day | |||||||
| 1992 | Kramfors | 6780 | Urban Background | 1032 | 2.43 | 91 | 0.00 | 0.00 | 0.00 | 0.00 | 6.80 | Day | ||||||||
| 1992 | Timrå | 144 | Urban Background | 154 | 1.71 | 1.53 | 175 | 0.00 | 0.00 | 0.00 | 0.00 | 9.40 | Day | |||||||
| 1991 | Härnösand | 7133 | Urban Background | 1006 | 3.94 | 4.81 | 182 | 0.00 | 0.00 | 0.00 | 0.00 | 20.50 | Day | |||||||
| 1991 | Timrå | 144 | Urban Background | 154 | 2.44 | 2.94 | 174 | 0.00 | 0.00 | 0.00 | 0.00 | 11.00 | Day | |||||||
| 1990 | Härnösand | 7133 | Urban Background | 1006 | 5.18 | 6.10 | 147 | 0.00 | 0.00 | 0.00 | 0.00 | 34.10 | Day | |||||||
| 1990 | Kramfors | 6780 | Urban Background | 1032 | 5.78 | 5.68 | 87 | 0.00 | 0.00 | 0.00 | 0.00 | 29.60 | Day | |||||||
| 1990 | Timrå | 144 | Urban Background | 154 | 3.63 | 5.09 | 182 | 0.00 | 0.00 | 0.00 | 0.00 | 29.00 | Day | |||||||
| 1989 | Härnösand | 7133 | Urban Background | 1006 | 7.26 | 8.76 | 178 | 0.00 | 0.00 | 0.00 | 0.00 | 17.60 | Day | |||||||
| 1989 | Kramfors | 6780 | Urban Background | 1032 | 5.59 | 91 | 0.00 | 0.00 | 0.00 | 0.00 | 14.10 | Day | ||||||||
| 1989 | Sollefteå | 7134 | Urban Background | 1104 | 3.15 | 3.48 | 88 | 0.00 | 0.00 | 0.00 | 0.00 | 6.80 | Day | |||||||
| 1989 | Timrå | 144 | Urban Background | 154 | 6.55 | 7.71 | 179 | 0.00 | 0.00 | 0.00 | 0.00 | 14.80 | Day | |||||||
| 1988 | Härnösand | 7133 | Urban Background | 1006 | 10.01 | 8.28 | 172 | 0.00 | 0.00 | 0.00 | 0.00 | 32.90 | Day | |||||||
| 1988 | Sollefteå | 7134 | Urban Background | 1104 | 6.55 | 8.11 | 169 | 0.00 | 0.00 | 0.00 | 0.00 | 21.30 | Day | |||||||
| 1988 | Timrå | 144 | Urban Background | 154 | 7.98 | 6.08 | 181 | 0.00 | 0.00 | 0.00 | 0.00 | 49.80 | Day | |||||||
| 1987 | Härnösand | 7133 | Urban Background | 1006 | 12.13 | 13.39 | 182 | 0.00 | 0.00 | 0.00 | 0.00 | 41.70 | Day | |||||||
| 1987 | Sollefteå | 7134 | Urban Background | 1104 | 10.17 | 11.85 | 174 | 0.00 | 0.00 | 0.00 | 0.00 | 37.10 | Day | |||||||
| 1987 | Timrå | 144 | Urban Background | 154 | 7.58 | 9.23 | 181 | 0.00 | 0.00 | 0.00 | 0.00 | 27.20 | Day | |||||||
| 1986 | Härnösand | 7133 | Urban Background | 1006 | 8.11 | 90 | 0.00 | 0.00 | 0.00 | 0.00 | 40.10 | Day | ||||||||
| 1986 | Sollefteå | 7134 | Urban Background | 1104 | 9.95 | 83 | 0.00 | 0.00 | 0.00 | 0.00 | 28.00 | Day | ||||||||
| 1986 | Timrå | 144 | Urban Background | 154 | 7.19 | 91 | 0.00 | 0.00 | 0.00 | 0.00 | 23.00 | Day |