Figure 3From: Modelling railway delay propagation as diffusion-like spreadingClustering results for (a) \(K=5\), (b) \(K=10\), (c) \(K=25\), (d) \(K=50\), (e) \(K=75\) and (f) \(K=100\). For visibility purposes, only the fourth largest clusters are coloured (in the order of red, blue, green and yellow). Stations not belonging to any cluster are coloured grey. Cluster size is measured by amount of associated stations. Largest cluster sizes are denoted in panel labelsBack to article page