Measurements and residuals of the monopole (left) and quadrupole (right) moments of the power spectrum of the true and reconstructed halo number density fields, computed on 128³ grids and averaged over the 20 validation fields. The same color code is used consistently across all figures. Solid curves (see Fig. 5) correspond to the reference case with R_s = 10 h⁻¹ Mpc Gaussian smoothing. Dashed and dotted curves represent reconstructions performed with R_s = 5 h⁻¹ Mpc and R_s = 15 h⁻¹ Mpc, respectively.