Bottom panel: 2D distribution of pixels in the overall rSFMS (i.e., including all pixels in our sample) and the three different binning schemes described in Sect. 3.2. As explained in the main text, different binning schemes address different questions. The red line shows the fiducial binning scheme adopted in this paper. Top panel: detection fraction of our SFR surface density tracer within each stellar mass surface density bin ranging from ∼20% in the low surface density regime to 100% at the high surface density end.