Neighbors' Connectivity (NC) as a function of connectivity of the respective reference node for the (A) rPIN, fPIN and only ePIN as well as EIN, (B) mapEIN, and (C) CIN. Plotted points correspond to mean values at a particular connectivity value. Linear regression analysis applied to the raw NC-connectivity value pairs yielded for the rPIN (Pearson correlation coefficient, r, and associated p-value, p): r = -0.10, p = 9.7E-15; fPIN: r = 0.16, p = 7.1E-6; ePIN: r = 0.21, p = 1.3E-3; EIN: r = 0.70, p = 0; mapEIN: r = 0.47, p = 2.6E-109; and CIN: r = 0.08, p = 1.9E-7. Note: the number of raw values per plotted mean value decreases rapidly with increasing connectivity. Thus, the apparent cluster of points in the rPIN near connectivity values near 100 is not statistically significant.