## 3 Results
\begin{table}
\begin{tabular}{c c c c c c c c} \hline  & & & \(\varepsilon_{\infty}\) & \(\varepsilon_{\rm s}\) & \(\tau\) (s) & \(\alpha\) & \(\sigma_{s}\) (S/m) & **RMSRE** \\ \hline \multicolumn{6}{c}{\(x_{\rm true}\)} \\ \hline \multirow{3}{*}{\(\tilde{x}\)} & \multirow{3}{*}{Cole–Cole} & LMA & 2.31 & 73.3 & \(8.76\times 10^{-12}\) & 0.1 & 1.97 & - \\  & & VPA & 2.31 & 73.3 & \(8.76\times 10^{-12}\) & 0.1 & 1.97 & \(1.0\times 10^{-23}\) \\  & & LMA & 12.9 & 71.8 & \(1.08\times 10^{-11}\) & 0 & 2.01 & 1.07 \\  & & VPA & 12.9 & 71.8 & \(1.08\times 10^{-11}\) & 0 & 2.01 & 1.07 \\  & & VPA & 12.9 & 71.8 & \(1.08\times 10^{-11}\) & 0 & 2.01 & 1.07 \\  & & LMA & \(4.56\times 10^{-11}\) & \(4.3\times 10^{-12}\) & \(8.13\times 10^{-24}\) & \(3.09\times 10^{-13}\) & \(1.47\times 10^{-13}\) & \(2.46\times 10^{-22}\) \\  & & VPA & \(1.52\times 10^{-10}\) & \(1.51\times 10^{-11}\) & \(2.73\times 10^{-23}\) & \(1.08\times 10^{-12}\) & \(4.94\times 10^{-13}\) & \(4.61\times 10^{-22}\) \\  & & Debye & LMA & \(0.000139\) & \(2.38\times 10^{-5}\) & \(4.18\times 10^{-17}\) & 0 & \(3.98\times 10^{-7}\) & \(1.62\times 10^{-9}\) \\  & & VPA & \(4.41\times 10^{-5}\) & \(7.56\times 10^{-6}\) & \(1.33\times 10^{-17}\) & 0 & \(1.27\times 10^{-7}\) & \(9.18\times 10^{-10}\) \\ \hline \end{tabular}
\end{table} 
Table 4: Statistical diagnostics on fitting results. Set B of the initial points and 250 mg/dL glucose concentrations were considered. \begin{table}
\begin{tabular}{c c c c c c c c} \hline  & & & \(\varepsilon_{\infty}\) & \(\varepsilon_{\rm s}\) & \(\tau\) (s) & \(\alpha\) & \(\sigma_{s}\) (S/m) & **RMSRE** \\ \hline \multicolumn{6}{c}{\(x_{\rm true}\)} \\ \hline \multirow{3}{*}{\(\tilde{x}\)} & \multirow{3}{*}{Cole–Cole} & LMA & 2.3 & 73.3 & \(8.72\times 10^{-12}\) & 0.1 & 1.99 & - \\  & & VPA & 2.3 & 73.3 & \(8.72\times 10^{-12}\) & 0.1 & 1.99 & \(8.81\times 10^{-24}\) \\  & & VPA & 2.3 & 73.3 & \(8.72\times 10^{-12}\) & 0.1 & 1.99 & \(1.37\times 10^{-22}\) \\  & & LMA & 12.9 & 71.8 & \(1.07\times 10^{-11}\) & 0 & 2.03 & 1.07 \\  & & VPA & 12.9 & 71.8 & \(1.07\times 10^{-11}\) & 0 & 2.03 & 1.07 \\  & & VPA & 12.9 & 71.8 & \(1.07\times 10^{-11}\) & 0 & 2.03 & 1.07 \\  & & LMA & \(4.3\times 10^{-11}\) & \(4.03\times 10^{-12}\) & \(7.65\times 10^{-24}\) & \(2.92\times 10^{-13}\) & \(1.37\times 10^{-13}\) & \(1.51\times 10^{-22}\) \\  & & VPA & \(1.65\times 10^{-10}\) & \(1.63\times 10^{-11}\) & \(2.96\times 10^{-23}\) & \(1.17\times 10^{-12}\) & \(5.34\times 10^{-13}\) & \(5.79\times 10^{-22}\) \\  & & LMA & \(0.000139\) & \(2.37\times 10^{-5}\) & \(4.16\times 10^{-17}\) & 0 & \(3.96\times 10^{-7}\) & \(1.59\times 10^{-9}\) \\  & & VPA & \(4.29\times 10^{-5}\) & \(7.31\times 10^{-6}\) & \(1.28\times 10^{-17}\) & 0 & \(1.22\times 10^{-7}\) & \(8.64\times 10^{-10}\) \\ \hline \end{tabular}
\end{table} 
Table 3: Statistical diagnostics on fitting results. Set B of the initial points and 100 mg/dL glucose concentrations were considered. \begin{table}
\begin{tabular}{c c c c c c c c} \hline  & & & \(\varepsilon_{\infty}\) & \(\varepsilon_{\rm s}\) & \(\tau\) (s) & \(\alpha\) & \(\sigma_{s}\) (S/m) & **RMSRE** \\ \hline \multicolumn{6}{c}{\(x_{\rm true}\)} \\ \hline \multirow{3}{*}{\(\tilde{x}\)} & \multirow{3}{*}{Cole–Cole} & LMA & 2.3 & 73.3 & \(8.72\times 10^{-12}\) & 0.1 & 1.99 & - \\  & & VPA & 4.13 & 79.8 & \(1.39\times 10^{-11}\) & 0.182 & 1.9 & \(14.1\) \\  & & VPA & 12.9 & 71.8 & \(1.07\times 10^{-11}\) & 0 & 2.03 & 1.07 \\  & & VPA & 12.9 & 71.8 &