Figure 3

Scatterplots of the slopes \({m}_{i}\) versus the intercepts \({q}_{i}\) of the regression lines \({T}_{i}={m}_{i}{ T}_{MS}+{q}_{i}\) modelling the relation between gridded minimum (left), mean (centre) and maximum (right) daily temperatures and catch basins (dots), weather station (x) and external (triangle) temperatures for the cities of Lugano (blue), Basel (green), Lausanne(cyan) and Zurich (red).