Figure 6

Best fits of the q-distribution parameters of the departure delay distribution as a function of the out-degree of the nodes \(k_{\mathrm{out}}\). Panels (A) and (B) show the parameters for the positive and negative departure delays in the Italian railway network, while panel (C) the positive departure delay distribution for the German case. No negative departure delays were reported in the German dataset. The function expressing b was sought of the form \(b=b_{0} e^{-k_{\mathrm{out}}/k_{0}}\), while the parameter q of the constant form \(q=c\)