Model predictions for binary black hole observables: chirp mass M_chirp, effective inspiral spin parameter χ_eff and cosmological redshift of merger z_merger distributions. We represent O1/O2 observing runs in orange and O3 in green, while lighter colors represent larger contour levels of 68, 95 and 99%, respectively. We overlaid in black the O1/O2 LIGO-Virgo Collaboration (LVC) data with their 90% credible intervals.