Research Article
PM2.5/PM10 Ratios in Eight Economic Regions and Their Relationship with Meteorology in China
Figure 5
Wind rose of 16 wind directions with the ratios among eight economic regions. (a) NR. (b) NCA. (c) ECA. (d) SCA. (e) MYR. (f) MRYR. (g) SC. (h) BNC.
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