PM2.5/PM10 Ratios in Eight Economic Regions and Their Relationship with Meteorology in China

<div>The relationship between the PM2.5/PM10 ratio and AQI. (a) Average PM2.5/PM10 ratio in six levels of AQI among eight economic regions; (b) the frequency distribution of AQI levels in different PM2.5/PM10 ratios.</div>

Advances in Meteorology

fig3

Figure 3

Figure 3: PM2.5/PM10 Ratios in Eight Economic Regions and Their Relationship with Meteorology in China