Recovery and contamination fractions – varying σ_{Δz/ (1 + z)}. f_Rec (solid and dashed lines) and f_Con (dotted and dot-dashed lines) as a function of redshift. Bottom panel refers to low-density environments, while top panel refers to high-density environments. The various curves are colour-coded according to the various values of σ_{Δz/ (1 + z)} (purple: σ_{Δz/ (1 + z)} = 0.003; blue: σ_{Δz/ (1 + z)} = 0.01; green: σ_{Δz/ (1 + z)} = 0.03; and red: σ_{Δz/ (1 + z)} = 0.06). The volume parameters for environmental reconstruction have been kept fixed to R_R = R_T = 1 Mpc and n = 1.5.