Channel-specific weights associated with the component-separated CMB for the three nominal pipelines. We show the SMICA weights for 27 different ℓ-bins calculated from raw, noisy C_ℓs (pipeline A, upper panel), pixel-averaged NILC weights for five needlet windows (pipeline B, middle panel), and pixel-averaged weights from parametric map-based component separation (pipeline C, lower panel). Weights are averaged over 100 simulations, shown are goal white + optimistic 1/f noise (dashed lines) as well as baseline white + pessimistic 1/f noise (solid lines). The semitransparent gray areas represent the channel weights’ 1-σ standard deviation across 100 simulations, covering baseline + pessimistic noise.