Lack of correlation on large angular scales (θ > 60°) in the cleaned Planck PR4 CMB temperature maps. We show the distribution of the statistic S​_1/2 (Eq. (4)) measured in the Planck PR4 simulations, and the vertical lines (on the left) are the observed values. The dashed blue and solid orange lines correspond to the Commander and SEVEM maps, respectively. None of the measured S​_1/2 in the simulations is as low as in the observations.