Figure A1.

The optimal Maxwell model parameters: (a) $E_{1N}^{\widehat{\lambda }}$; (b) $v_{1N}^{\widehat{\lambda }}$; (c) $E_{\infty N}^{\widehat{\lambda }}$; and (d) integral identification index $Q\left({\mathit{g}}_N^{\widehat{\lambda }}\right)$, Equation (5), as the functions of the number of measurements $N$ for noises $\sigma =0.001, 0.004, 0.007 \left[\mathrm{Pa}\right]$; the horizontal violet lines correspond to the elements $E_1^{\ast \widehat{\lambda }}$, $v_1^{\ast \widehat{\lambda }}$, $E_{\infty }^{\ast \widehat{\lambda }}$ of the optimal regularized parameter ${\mathit{g}}^{\ast \widehat{\lambda }}$ (subfigures (a–c)) and to the respective quadratic index $Q\left({\mathit{g}}^{\ast \widehat{\lambda }}\right)$ (subfigure (d)). The regularization parameters $\widehat{\lambda }$ are given in Table A1. The caret under $\widehat{\lambda }$ variable has been omitted to simplify the description of the plot axes.