Fig. 4
From: Effect of climatic factors on the seasonal fluctuation of human brucellosis in Yulin, northern China
a Contour plots of the combined effect of time lags and sunshine duration on the relative risk of transmission of human brucellosis. b. Effect of specific sunshine durations and time lags on the relative risk of transmission of human brucellosis. The red lines are the mean relative risks, and the gray lines are 95% CI. c. Effects of specific sunshine durations and time lags on the cumulative risk of transmission of human brucellosis. The red lines are the mean relative risks, and the gray areas are 95% CI