Table 1 The mean μ̄ and the standard deviation σ of the distribution of \(f_{c}\) for the rectangular network

\(0.05 < \kappa _{n} < 0.15\)

0.4789

0.0037

\(0.15 < \kappa _{n} < 0.25\)

0.4188

0.0026

\(0.25 < \kappa _{n} < 0.35\)

0.3678

0.0023

\(0.35 < \kappa _{n} < 0.45\)

0.3195

0.0022

\(0.45 < \kappa _{n} < 0.55\)

0.2717

0.0019

\(0.55 < \kappa _{n} < 0.65\)

0.2240

0.0018

\(0.65 < \kappa _{n} < 0.75\)

0.1760

0.0016

\(0.75 < \kappa _{n} < 0.85\)

0.1273

0.0014

\(0.85 < \kappa _{n} < 0.95\)

0.0777

0.0012