Figure 2
From: Air pollution, health status and public awareness of environmental problems in China
Air pollution indicators based on population-weighted PM2.5 and geographic mean PM2.5 in 2018 and 2020. Note: The first row, from left to right, represents the population-weighted annual average concentration of PM2.5 for the years 2018 and 2020, respectively. The second row, also from left to right, represents the geographic mean annual average concentration of PM2.5 for the same years. A darker color indicates a higher concentration.
