Fig. 4

PM_2.5 data collected from the monitoring stations in Wuhan. a Donghu Liyuan, b Donghu Gaoxin, c Wujia Mountain, d Wuchang Ziyang, e Hankou Jiangtan, f Hankou Huaqiao, g Hanyang Yuehu, h Chenhu Qihao, and i Qingshan Ganghua