Stacked heatmap showing the two-dimensional PDF for SFR and L_{150 MHz} for all 118 517 galaxies in our sample, including the uncertainties on the SFR (derived based on the percentiles of the MAGPHYS SFR PDF) and on L_{150 MHz} (using the pixel flux densities and rms values at the redshift in the Duncan et al. 2021 catalogue). The “effective” number of galaxies in each bin – we recall that each galaxy is sampled 100 times (with each sample representing 0.01 galaxies) and can therefore contribute to multiple pixels in the stack – is indicated by the colour bar to the right. The best-fit SFR-L_{150 MHz} relationship from G18 is overlaid as the solid orange line, along with the broken power-law G18 relation (which we have evaluated at a canonical stellar mass of 10¹⁰ M_⊙, and which is shown as the dashed blue line) along with (in red) the 16th, 50th, and 84th percentiles of the L_{150 MHz} distribution at each SFR.