Fig. 1. Variation of R and SSR with RH

Fig. 2. Scatter plot of atmospheric extinction coefficient per unit mass with RH

Fig. 3. Average and standard deviation of atmospheric extinction coefficient per unit mass changed with RH

Fig. 4. Variation of KS test statistics and KS test threshold with RH

Fig. 5. Variation of log-normal distribution parameters with RH. (a) Shape parameter; (b) scale parameter

Fig. 6. Variation of miandniwith RH

Fig. 7. Scatter plots of inverted PM_2.5 mass concentration and actual PM_2.5 mass concentration. (a) Scheme 1; (b) scheme 2; (c) scheme 3; (d) scheme 4