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. Author manuscript; available in PMC: 2021 Jan 11.
Published in final edited form as: Environ Int. 2020 Oct 28;146:106217. doi: 10.1016/j.envint.2020.106217

Table 4. Means and standard deviation (SD) of fine particulate matter (PM2.5) concentration (μg/m3) by season and study area.

Personal Kitchen Living Outdoor
Mean SD Mean SD Mean SD Mean SD
Warm season
    Suzhou (urban)     40.7     81.1     41.6     103.2     37.9     65.4     40.9     21.3
    Gansu (rural)     60.4     269.9     142.3     1415.1     43.4     130.3     17.9     9.6
    Henan (rural)     78.6     145.9     77.5     206.6     57.4     69.7     51.5     23.0
Cool season
    Suzhou (urban)     78.2     293.1     81.6     270.2     61.9     89.4     88.5     51.0
    Gansu (rural)     160.5     1514.9     508.1     4195.6     118.3     359.0     44.3     32.2
    Henan (rural)     114.8     329.5     222.3     868.1     109.1     165.0     166.4     105.1