Violin plots showing the behaviour of the stack in returned luminosity (top) and S/N (bottom) with uncertainty, Δ_v, in the redshifts of the galaxy catalogue being stacked on, assuming that uncertainty can be measured and the spectral aperture of the stack can be widened to account for it. Each of these stacks are on 1000 catalogue objects. This analysis does not account for the increased numbers of objects available in some photometric catalogues.