Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12940-017-0314-5/MediaObjects/12940_2017_314_Fig1_HTML.gif)
Patterns of concentrations of PM fractions and O3 in England: a by decile of socioeconomic deprivation and (b) by socioeconomic and urban-rural status. Annual mean concentrations were estimated by regression models allowing for district-level clustering with adjustment for region