Fig. 7
![Fig. 7](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40645-020-00357-9/MediaObjects/40645_2020_357_Fig7_HTML.png)
Variability in a enrichment factor in lead (EFPb) and b a posteriori model contribution of coal combustion sources to LFe (%) in each sampled aerosol (or associated geographical grid cell)
Variability in a enrichment factor in lead (EFPb) and b a posteriori model contribution of coal combustion sources to LFe (%) in each sampled aerosol (or associated geographical grid cell)