Statistical redshift reconstruction using a profile-χ² scan for different LSFs, jointly for the four states considered in this work. The solid, dotted, and dashed curves represent the profile-χ² for a given LSF (nominal, and ±15%, respectively). The best-fit value is shown for each case as an open circle, the ±1σ, ±2σ, and ±3σ two-sided confidence bands represented as small open squares. Finally, the 95% confidence level upper limit is represented as a vertical bar and its actual value shown in the plot. An artificial constant κ was added to two of the curves for clarity purposes.