Power spectra of the foreground-cleaned CMB maps from FFP8 simulations. Top: TT power spectra evaluated using the FFP8-UT74 mask. Bottom: EE power spectra evaluated using the FFP8-UP76 mask. Thick lines show the spectra of signal plus noise estimated from the half-mission half-sum maps; thin lines show the noise levels from half-mission half-difference maps. The black line shows the input spectrum.