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. Author manuscript; available in PMC: 2020 Apr 9.
Published in final edited form as: Environ Int. 2019 Oct 26;133(Pt B):105232. doi: 10.1016/j.envint.2019.105232

Fig. 2.

Fig. 2.

Relative contribution of different emission groups to California’s ambient (a) PM2.5 and (b) O3 in different seasons in 2012.