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. 2020 May 4;731:139178. doi: 10.1016/j.scitotenv.2020.139178

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Fig. 2 — Positive association between the number of confirmed COVID-19 cases (log scale) and ambient average relative humidity levels (23.33–82.67%) observed for major Chinese cities during Jan and March, 2020 (City information is listed in Supporting information File S1). Spearman's rank correlation coefficient (data not normally distributed) was performed using SPSS22.0(IBM Corporation 2013).

Positive association between the number of confirmed COVID-19 cases (log scale) and ambient average relative humidity levels (23.33–82.67%) observed for major Chinese cities during Jan and March, 2020 (City information is listed in Supporting information File S1). Spearman's rank correlation coefficient (data not normally distributed) was performed using SPSS22.0(IBM Corporation 2013).