where the specific parameters used are reported in Table . We set the value 𝜏 1 = 0.1 s and investigated two values for 𝜏 2 , namely 𝜏 2 = 1 and 10 s. Figure shows the DRT, real, and imaginary parts of the impedance. For separated timescales with 𝜏 1 = 0.1 s and 𝜏 2 = 10 s, the Nyquist plot consists in two semicircles (Figure ). The DRT recovered using the fGP-DRT method correctly shows two distinct peaks (Figure ). Similarly, for 𝜏 1 = 0.1 s and 𝜏 2 = 1.0 s, the Nyquist plot of the impedance resembles a single semicircle with close peaks in the DRT as shown in Figure (b) and (d), respectively. The impedance is well regressed as shown in Figure (a), (b), (e) and (f). As for the DRT, the location of the peaks is accurately identified, but the credible bands widen as the timescales grow closer (Figure and