Left: second-order moment of the reconstructed mean biasing functions shown in Fig. 7. The cell size is R = 6h^-1 Mpc . Different line styles and colours indicate different luminosity cuts listed in the plot. The redshift ranges and colour codes are the same as in Fig. 7. Error bars represent the 1σ scatter among the mocks. Right: similar plots showing the non-linear bias parameter . A horizontal offset δ = 0.015 was applied to avoid overlapping error bars. All curves are plotted out to δ_MAX.