Fig. 6From: Relation between temperature and suicide mortality in Japan in the presence of other confounding factors using time-series analysis with a semiparametric approachThe GAM-estimated effect of sunshine duration (h) on suicide mortality for 8 regions in Japan (excluding Okinawa). The continuous lines are the function estimates, and the shaded areas delimit the 95% confidence interval for the function. The numbers on each y-axis are the effective degrees of freedom of the term being plotted. Smoothing parameters are estimated by UBRE/AICBack to article page