Comparison of the dispersion (σ_NMAD) as a function of magnitude (top panel: i; middle panel: K_s; bottom panel: NUV). The σ_NMAD for the W1 (black circles) and W4 (red squares) fields correspond to the open symbols and solid lines and refer to the left y-axis. The fraction of catastrophic redshifts are reported as field symbols and dashed lines and refer to the right y-axis (%). The PRIMUS spectroscopic sample in W1 field is shown separately (gray triangles).