150 MHz LFs for SFGs at different redshift bins predicted by SEMPER. The model is derived by assuming the mass-dependent FIRRC from Delvecchio et al. (2021) (solid black line) and McCheyne et al. (2022) (hatched grey area). As in Fig. 2, Eq. (11) is applied only to the first redshift bin. Data points (symbols as in legend) are from Cochrane et al. (2023), Bonato et al. (2021a) and Ocran et al. (2020a). The latter are scaled from 610 MHz to 150 MHz assuming α = −0.7. Cyan lines and shaded areas are the predictions from the T-RECS simulation by Bonaldi et al. (2019, 2023) and their 1σ uncertainties, respectively.