Residuals spectra after destriping the signal plus noise in the three cases of (1) pure white noise (blue), low frequency noise plus white noise with (α = 2, f_knee = 0.1 Hz), (2) (α = 2, f_knee = 0.01 Hz) and (α = 1, f_knee = 0.1 Hz) compared to the simulation power spectra (red), and (3) CMB WMAP five-year fiducial model (black) on 100 simulations. Upper line, from left to right: temperature, E-mode, and B-mode. Bottom line, from left to right: cross-correlation TE, TB, and EB.