Fig. 3
From: Effects of meteorological factors on influenza transmissibility by virus type/subtype
Exposure-response curves of the associations of daily instantaneous effective reproductive number (Rt) with various meteorological variables. Curves and colored areas represent the point estimates of Rt ratios and the corresponding confidence intervals, respectively. The ticks along the x-axis are observed meteorological data. Horizontal lines indicating Rt ratio = 1 were also plotted. The Rt ratios are the ratio of predicted Rt with respect to reference values for the meteorological factors of mean temperature, hourly temperature variability (HTV), absolute humidity, and relative humidity set to 18.12 °C, 3.25 °C, 10.88 g/m3, and 66.99%, respectively. Reference values for the mean temperature, absolute humidity, and relative humidity corresponded to the lowest transmission risk of influenza, and the median is used as the reference value for HTV. We depicted the associations excluding the 10 lowest and the 10 largest values of meteorological factors, avoiding the potentially unrobust estimates due to small sample size