(A) The weighted-median stack of the rest-frame 1.4 GHz luminosity of the final sample of 8122 star-forming galaxies, in units of W Hz⁻¹. We obtain a clear detection of the stacked rest-frame 1.4 GHz continuum emission, at 35σ significance. Note the negative features north and south of the stacked continuum source arise due to the undeconvolved point-spread function of the interferometer. [B] The weighted-median-stacked image of the 1.4 GHz luminosity at locations offset by 120″ from each of the 8122 galaxies; this image shows no evidence for systematic effects. The contours in [A] are plotted at (10, 20, 30) × σ, where σ is the rms noise on the stacked offset image in [B].