Luminosity L₅₀₀ of the overlaps (top panel) and the ratio L₅₀₀ / L_500,MCXC in dex (bottom panel) as a function of L_500,MCXC, the luminosity measurements retained in the MCXC. Symbols and colors are the same as in Fig. 4, but refer to the overlaps only. The solid line in the top panel indicates the best fit to the data. The solid line in the bottom panel indicates the error weighted mean of the luminosity ratio, while the dashed horizontal lines indicates the luminosity ratios equal to 2 and 0.5.