Exploring the Regional Structure of the Worldwide Air Traffic and Route Networks

Figure 9

(a) The average clustering coefficient as a function of k. The exponent value estimated is identical to the Europe-Russia-Central Asia component. (b) The average degree correlation of degree k. For both figures, the red points are the values of the weighted world transportation network, while the blue points are the unweighted world transportation network values. The distribution of the points is not monotone. This behavior is similar to the one of the Africa-Middle East-Southern Asia component.

(a)

(b)