Polarization power spectra in , showing the noise (red) and the main systematic residuals: ADCNL remaining dipole distortion after variable gain correction (purple); bandpass-mismatch leakage (light blue); leakage from calibration mismatch (orange); and the sum of all these (green). Polarization efficiency (dark blue), SRoll residual empirical transfer function (grey), and CO template subpixel effect (turquoise) have not been included in the sum. The fiducial CMB power spectrum is shown in full, dotted and dashed black lines (see text).