Missing data effects: third-order (left panel) and fourth-order (right panel) E-mode moments of the original (black) compared to the moments estimated on the SKS (red) and SKS+ (blue) convergence maps on seven wavelet scale. The estimation of the moments is the average of the 10 simulated maps for angular resolution N_side = 2048 that is calculated outside the mask M. The lower panel shows the relative higher-order moment errors introduced by missing data effects, that is, the normalised difference between the upper curves.