Estimates of the CMB power spectra from the foreground-cleaned FFP6 maps, computed by XFaster. The solid lines show the spectra after subtracting the best-fit model of residual foregrounds. The vertical dotted line shows the maximum multipole (ℓ = 2000) used in the likelihood for fitting the foreground model and cosmological parameters (see Sect. E.3 for further details). The dashed lines show the spectra before residual foreground subtraction.