During sampling, 10,000 samples were generated with the initial 1,000 samples being discarded as burn-in. Next, having generated 9,000 samples of 𝒙, the corresponding impedances, 𝒁, were obtained as 𝒁 = 𝐀𝒙. The 1 st to 99 th percentile credible intervals around the means were visualized as gray regions in corresponding plots.