Upper panels: ratio R^TT(ℓ_max) of the Planck 2018 data determined at N_side = 32. The shaded grey regions indicate the distribution of the statistic derived from the SMICA MC simulations, with the dark, lighter, and light grey bands corresponding to the 1, 2, and 3σ confidence levels, respectively. Left panel: ratio computed from the component-separated maps, Commander (red), NILC (orange), SEVEM (green), and SMICA (cyan), after application of the common mask. Note that these results substantially overlap each other. Right panel: ratio computed when the Lkl-Commander map (magenta) is analysed with the corresponding mask. Lower panels: lower-tail probability estimator as a function of ℓ_max (left), and ℓ_min with a fixed ℓ_max = 24 (right). For these lower panels small probabilities would correspond to anomalously odd parity.