Residuals ΔX_α/X of the spin-moment expansion for d12 expressed in percentages for the 15 bands of the LiteBIRD instrument. In the left panel is X=I, and X=Q, U is displayed in the right panel. The residuals were computed on the full sky up to a different order (α) of the expansion. The lines correspond to the median values, while the shaded areas mark the values of the median absolute deviation. We note that the blue (α = 0) and the orange (α = 1) curves are superimposed in the left panel.