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. 2022 Dec 23;864:161152. doi: 10.1016/j.scitotenv.2022.161152

Fig. 2.

Fig. 2

Methods of defining peaks for total COVID-19 cases.

a. Method I defined peaks (gray shaded area) of total COVID-19 cases

b. Method II defined peaks (gray shaded area) of total COVID-19 cases

c. Method III defined peaks (gray shaded area) of total COVID-19 cases.