(color online) Dependence of on ΔT_ij for a fixed i and its different neighbors j where the network is chosen as the random network with p = 1 and the straight lines are from the least square method. Panels (a) and (b) show the results of two typical nodes in the network with C = 0.1, and panels (c) and (d) show the results of two typical nodes in the network with C = 0.6.