Statistics used to describe the point-parity asymmetry of the CMB. (a) Top panel: statistic as a function of ℓ_max for u_min = 4.50 (red), compared to the Planck 2018 data. The overlap is visually almost perfect. (b) Bottom panel: same for the P(ℓ_max) statistic using the values of C_ℓ determined from the matching of the statistic with the data shown on the left. The reduced χ² for this fit is .