Figure A3.

The parameters of the optimal seven-parameter Maxwell model: (a) $E_{1N}^{\widehat{\lambda }}$; (b) $v_{1N}^{\widehat{\lambda }}$; (c) $E_{2N}^{\widehat{\lambda }}$; (d) $v_{2N}^{\widehat{\lambda }}$ 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 $E_1^{\ast \widehat{\lambda }}$, $v_1^{\ast \widehat{\lambda }}$, $E_2^{\ast \widehat{\lambda }}$ and $v_2^{\ast \widehat{\lambda }}$ of the optimal regularized parameter ${\mathit{g}}^{\ast \widehat{\lambda }}$. The regularization parameters $\widehat{\lambda }$ are given in Table A3. The caret for $\widehat{\lambda }$ variable has been omitted to simplify the description of the plot axes.