In this section, the two frequency-dependent error models are studied for 𝜉 𝑛 exp = 0.02 (Section GCV appears to outperform all other methods. Figures and show the averaged recovered impedances and DRTs for each method studied and the noise model in (21b). Consistent with our findings, we note that GCV and mGCV methods led to satisfactory impedance and DRT recovery, LC and rGCV under-recovered the DRT while re-im CV and kf-CV were more uncertain.