Fits obtained from our analysis, for the different mass- and redshift-selected samples. The results in the top two panels are represented with respect to redshift at constant mass (respectively minimal and maximal masses of the full sample), while the bottom two panels are the results presented with respect to mass, at a fixed redshift (respectively minimal and maximal redshifts of the full sample). The shaded areas around the curves mark the 68% and 95% confidence levels. The blue dashed line marks the reference value Ω_b/Ω_m = 0.156.