Table 7 Results of power law fit of the degree and strength distribution for all the months obtained by using the algorithm described in [47]. The α parameter is the fitted exponent and the \(k_{\mathrm{min}}\) and \(w_{\mathrm{min}}\) parameter is the estimated minimum value after which the behaviour of the distribution is consistent with a power law tail. Since the volume of payments are scaled, the values of \(w_{\mathrm{min}}\text{ s}\) are not much informative, so for the strength \(F(w_{\mathrm{min}})=1-ECDF(w_{\mathrm{min}})\) is reported instead

Month

\(\alpha ^{\mathrm{in}}\)

\(k_{\mathrm{min}}^{\mathrm{in}}\)

\(\alpha ^{\mathrm{out}}\)

\(k_{\mathrm{min}}^{\mathrm{out}}\)

\(\alpha ^{\mathrm{in}}\)

\(F(w_{\mathrm{min}}^{\mathrm{in}})\)

\(\alpha ^{\mathrm{out}}\)

\(F(w_{\mathrm{min}}^{\mathrm{out}})\)