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Table 3 Pollutant exposure at postcode sector level for white adults aged 45 and older

From: Chronic exposure to outdoor air pollution and diagnosed cardiovascular disease: meta-analysis of three large cross-sectional surveys

  1994 1998 2003
  Median Range IQR* Median Range IQR* Median Range IQR*
PM10 19.6 12.5–36.1 3.7 18.0 12.6–27.0 2.9 16.3 11.0–22.6 2.6
NO2 27.3 4.1–73.0 17.8 35.6 7.3–66.7 12.7 23.1 6.1–54.6 10.9
SO2 9.5 1.0–41.1 8.3 6.2 0.2–39.3 6.1 4.2 0.5–14.4 2.8
O3 53.4 38.3–64.7 4.4 50.7 43.5–63.1 4.3 56.0 47.8–65.7 3.8
  1. All units are μg m-3. 1998 and 2003 are average exposures over that year and the previous year. 1994 data are 1994 annual averages.
  2. *Interquartile range