Figure 2

Time series plots of all-cause mortality, temperature, relative humidity and proportions of influenza positive specimens. Observed data (dots) are smoothed by a natural cubic spline with 8 degrees of freedom per year (line).
Time series plots of all-cause mortality, temperature, relative humidity and proportions of influenza positive specimens. Observed data (dots) are smoothed by a natural cubic spline with 8 degrees of freedom per year (line).