Histogram of the ratio between the redshift-derived (d_z) and the redshift-independent (d_L) luminosity distance for galaxies in Sample G2 (orange histogram). The purple histogram represents the same, but for a sample of simulated galaxies distributed according to a volume prior and with a spectroscopic redshift that has been perturbed with a peculiar velocity term of v_peculiar = 750 km s⁻¹.