Finding F-1313

“Mean levels of outdoor PM2.5 and ozone measured in the central air pollution measurement site were 4.8 and 55 μg/m3 between November 10, 2008 and May 19, 2009.”

Wood stove use and other determinants of personal and indoor exposures to particulate air pollution and ozone among elderly persons in a Northern Suburb (2019). Indoor air. Page 3. CKB 7615

Structure

Factor: Ozone (O₃)
Population: elderly panel participants
Setting: city (ambient), FI (10 November 2008 to 19 May 2009)
Study design: panel study of 37 elderly people in the Helsinki area between November 2008 and May 2009: each participant carried a personal sampler for 22 hours a month while fine particulate matter, its absorbance and ozone were measured at the same time in the home, against a central outdoor measurement site, with determinants of exposure from diaries and questionnaires (class 4)
Effect: mean 55
Caveat: the outdoor reference of the panel, not an indoor level

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