The histograms show the probability density function (pdf) of the mass bias (Equation (26)) in a 4 × 4 grid in redshift and mass. The mean of the distribution and the variance in logarithmic space are quoted in the upper left corner in each panel. In each panel, a lognormal pdf according to these two parameters is overplotted by a solid line to see how well the distribution is described by the lognormal form. These histograms are based on an n_gal = 30 arcmin⁻² sample selected with a ν_threshold ≥ 4.0 cut. The uncertainty due to halo triaxiality is included.