Table 12.
Rural background. Descriptive data of regional air pollution at a monitoring station in a rural area. Annual mean concentrations of traffic-related pollutants measured at Vavihill 1985–2006. Data source: IVL Swedish Environmental Research Institute Ltd. http://www.ivl.se/miljo/
| Year | SO2 (μg/m3) | NO2 (μg/m3) | O3' (μg/m3) | PM10 (μg/m3) | PM2.5 (μg/m3) |
| 1985 | 5.14 | 2.36 | 60.2 | ||
| 1986 | 2.27 | 59.9 | |||
| 1987 | 5.47 | 2.11 | 55.1 | ||
| 1988 | 3.90 | 1.84 | 57.7 | ||
| 1989 | 3.93 | 2.66 | 56.5 | ||
| 1990 | 2.98 | 2.36 | 55.0 | ||
| 1991 | 2.64 | 2.08 | 51.3 | ||
| 1992 | 2.06 | 1.72 | 56.0 | ||
| 1993 | 1.70 | 1.98 | 57.4 | ||
| 1994 | 1.17 | 1.78 | 58.6 | ||
| 1995 | 1.35 | 1.92 | 59.3 | ||
| 1996 | 1.31 | 1.77 | 63.0 | ||
| 1997 | 0.67 | 2.05 | 58.8 | ||
| 1998 | 0.74 | 1.87 | 54.6 | ||
| 1999 | 0.55 | 1.66 | 59.1 | ||
| 2000 | 0.45 | 1.70 | 57.6 | 16.0 | |
| 2001 | 0.42 | 1.37 | 60.2 | 15.4 | |
| 2002 | 0.37 | 1.39 | 66.6 | 16.3 | |
| 2003 | 0.52 | 1.54 | 62.9 | 18.6 | |
| 2004 | 0.37 | 1.48 | 58.5 | 13.8 | |
| 2005 | 0.49 | 1.47 | 61.0 | 15.2 | |
| 2006 | 0.50 | 1.59 | 64.3 | 17.3 |