Fit to median age–redshift trend obtained with binning A. Red and blue dots are median values, respectively, for the high-mass (log(M_formed/M_⊙) > 11.26) and the low-mass (log(M_formed/M_⊙)≤11.26) sample. In grey, we show flat ΛCDM trends with (H₀, Ω_M, 0, t₀) values randomly extracted from the posterior distribution, comprised between 16th and 84th percentiles. Dashed black lines represent the best fit.