Input and inferred power spectra of the CMB (top) and the sum of the non-CMB components (bottom). In the upper panel of each figure, the black dot at each multipole represents the peaks of the marginal posterior, the gray region shows the asymmetric ± 1σ-error bar derived from the marginal posterior, the red line is the input power spectrum. The lower panel represents the relative error to the input power spectrum. The sampler accurately recovers the power spectra of the CMB.