Top panels: Reduced χ_dof² of the cross-power best-fits. Bottom panels: Corresponding amplitude values compared to the CL23 result in red, as functions of the cleaning level. Columns correspond to PCA, PCAw and mPCA from left to right. The filled blue circles correspond to the ‘standard’ reference analysis; the empty orange triangle to the analysis with the extra flagging of ∼20% of the channels before the component separation; the filled green squares correspond to the analysis performed reconvolving all maps before the component separation.