Distribution of NUVrJ star-forming galaxies as a function of M_⋆ and redshift. The colour scale in the central panel indicates the underlying sample size, increasing from blue to red. The grey-dashed grid encloses the 42 M_⋆ − z bins into which we split our sample (413 678 objects). Galaxies within that grid are projected on the upper-left and bottom right histograms with redshift and M_⋆, respectively (grey lines). The blue and red histograms represent the subsample with a signal-to-noise ratio (S/N) that is greater than 3 at 3 GHz and across all IR bands, respectively (see Sects. 2.2 and 2.3). The orange solid line marks the 90% M_⋆ completeness limit of Laigle et al. (2016) for comparison.