Histograms of the distribution of the interior structure parameters $(\hat{\mathit{y}})$. These were obtained using the Monte Carlo dropout plus noise starting from the x* set of input parameters shown in Table 3, which was randomly selected from the validation dataset. The mean values, $\mu (\hat{\mathit{y}})$, and the corresponding true values, y*, are shown in the top-right corner of each subplot. The values of y* are also indicated by dashed vertical lines.