Smoothed binned signal-to-noise bispectra ℬ for the Planck 2018 cleaned sky maps. We show slices as a function of ℓ₁ and ℓ₂ for a fixed ℓ₃-bin [518, 548]. From left to right results are shown for the four component-separation methods SMICA, SEVEM, NILC, and Commander. From top to bottom we show: TTT; TTT cleaned of clustered and unclustered point sources; T2E; TE2; and EEE. The colour range shows signal-to-noise from −4 to +4. The light grey regions are where the bispectrum is not defined, either because it lies outside the triangle inequality or because of the cut .