Fig. 3From: Evaluation of the effects of meteorological factors on COVID-19 prevalence by the distributed lag nonlinear modelContour plots of the relative risk (RR) along temperature and lag time on COVID-19 infection. The X-axis represents the meteorological value and the Y-axis represents lag days ranging from 0 to 21 days. The RR was determined based on the median value of meteorological data. The red and blue indicate RR greater than 1 and less than 1, respectivelyBack to article page