Extended Data Fig. 6: Drivers of PM2.5 variations from 2017 to 2020 over the three key regions.
From: Efficacy of China’s clean air actions to tackle PM2.5 pollution between 2013 and 2020

Estimations of drivers in (a) BTHSA, (b) YRD and (c) FWP. Values in parentheses show the 95% CI of our estimates.