Power spectra of the different components for field SP (the figure is similar for the other fields). Power spectra of the 217, 353, 545, and 857 GHz Planck maps (continuous black line) are compared to the noise power spectra (diamonds), to the CMB-cleaned power spectra (red), and to the CMB- and interstellar dust-cleaned power spectra (green). In this plot signal power spectra have not been corrected for the beam window function. Noise power spectra are computed using half-pointing period maps, as explained in Sect. 3.3.