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

<div>Spatiotemporal variations of average ROC on PM2.5/PM10 ratio. (a) Interannual trends with two types. (b) Seasonal variations with two types. (c) Monthly variations with four types. (d) Weekday-weekend pattern with two types.</div>

Advances in Meteorology

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Figure 4

Figure 4: PM2.5/PM10 Ratios in Eight Economic Regions and Their Relationship with Meteorology in China