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2.9. Statistical Analysis. Statistics analysis was performed with SPSS 19.0 software (IBM, USA). Analyses of variance (ANOVA) were applied to determine if significant differences in the amount of leaf-deposited PM occurred among different sampling sites and sampling time. When
analysis of variance indicated significant differences among sampling sites and sampling time, Tukey’s honestly significant difference (Tukey’s HSD) tests were performed to determine
which exhibited significant differences. The differences in the amount of PM among different weather conditions were also used by ANOVA and Tukey’s HSD. A given effect was
assumed to be significant at
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