Variation in the average level of the calibration constants of LFI27M, with (black line) or without (grey line) applying the Mademoiselle iterative code, as a function of the error in the solar system speed (top) and the displacement of the dipole axis (bottom). The two plots are normalized so that all the lines go through the point (0,0). The width of the vertical grey band corresponds to the error quoted by Jarosik et al. (2011) for v_Sun (top) and l (bottom).