Research Article
Study on a Large-Scale Persistent Strong Dense Fog Event in Central and Eastern China
Figure 9
The variation of visibility (unit: m), PM2.5 concentration (unit: μg/m3), and RH (unit: %) in Shijiazhuang, Hebei (a), and Yancheng, Jiangsu (b), from December 30, 2016, to January 5, 2017.
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| (b) |