Projection effects: Third-order (left panel) and fourth-order (right panel) moments estimated on seven wavelet bands of the original E-mode Convergence map (black solid line for full sky, black dashed line and black dotted line for planar approximation of 10° ×10° and 4° ×4° respectively) compared to the moments estimated on the SKS, SKS+ (red & blue solid lines respectively) and KS, KS+ (for planar, red and blue dashed and dotted lines respectively). The plots show the comparison of only one realisation for angular resolution N_side = 2048 and estimations are only made outside the mask M.