Distribution of the correlation ratios on the LR16 region from Planck simulations for detector-set (DS, red histograms) and half-mission (HM, orange histograms) data splits, for the four multipole bins we use in the analysis: top left, ℓ ∈ [50,160]; top right, ℓ ∈ [160,320]; bottom left, ℓ ∈ [320,500]; and bottom right, ℓ ∈ [500,700]. The values derived from the data are shown as vertical lines of the corresponding colour. The PTEs corresponding to these data values with respect to the simulations are reported in Table 1.