Separation of star-forming galaxies (blue dots) and green valley and quenched galaxies (red dots) using their locus in the τ_gas − M_★ diagram at z = 0. The selection of sSFR > 10^{−10 + 0.3z} yr⁻¹ has already been applied. Similar cuts are applied at z = 1, 2, and 3, where the fraction of quenched or transitioning galaxies is lower. This selection removes galaxies forming stars slowly compared to their gas mass reservoir.