Change in the stellar mass estimate when the redshift is inaccurate. The x-axis shows the change in stellar mass from a reference run at the spectroscopic redshift, and another run assuming z + Δ × (1 + z) as the redshift, with Δ values of 0.01 (blue), 0.02 (red) and 0.04 (yellow). The red and yellow histograms are similar, with a tail to the left. The blue histogram is narrower and lacks the long tails present in the other two histograms.