Upper panels: star-forming galaxies with in the size−Δ log(SSFR)−z plane. The blue solid line shows the maximum size, corresponding to the 10% completeness level, that can be observed for a galaxy with evaluated at the central redshift value per bin. Black arrows show the upper limits for the size of unresolved sources. Lower panels: density distribution per Δ log(SSFR) bin (0.5 dex width) of SFGs in the size−Δ log(SFSR)−z plane. Contour levels are at the 10, 20, 30, 40, 50, 60, 70, 80, and 90th percentiles. The median size derived via the KM estimator is shown by the dark magenta circles, the error bars correspond to the 16th and 86th percentiles of the distribution.