Figure 5:

Correlations between (a) V and S, (b) D_ave and D_max, (c) TH_Dmax and TH_ave, (d) TH_Dmax and TH_median, (e) d_c and d_{c_max}, and (f) β_min and d_c,max. For each pair, the correlation coefficient is high (|r| > 0.9 or R² > 0.81), such that one of the two indices can be ignored in the regression analyses described in Tables 2 and 3 with the superscripts ^a, ^b, ^c, ^d, ^e and ^f.