Figure 6
From: Understanding coupling dynamics of public transportation networks
Temporal features of index values. The red line denotes the average index value and the light gray line denotes the index value of each SDN. (a), (c) Coupling strength \(\lambda^{\mathrm{norm}}\); (b), (f) Speed ratio \(\beta^{\mathrm{norm}}\); (c), (g) Average trip distance \(d^{\mathrm{norm}}\); (d), (h) Fraction of trips from ordinary zones \(p^{\mathrm{norm}}\)