Relation between SFR surface density (Σ_SFR) and molecular gas mass surface density of SFGs, i.e., the so-called KS relation. Blue, orange, and red circles represent our stacking results for MS galaxies, in between MS and SB galaxies, and SB galaxies, i.e., ∆MS < 0.4, 0.4 < ∆MS < 0.7, and 0.7 < ∆MS, respectively. The red star with the arrow is the lower limit of Σ_SFR and in our highest ∆MS and 10^10.0 ≤ M_★/M_⊙ < 10^10.5 bin because their star-forming size is not resolved. Gray circles and stars are local normal and SB galaxies from Kennicutt (1998a) and de los Reyes & Kennicutt (2019). Green and brown triangles are the median values of these local normal and SB galaxies. The blue dashed line is the MS-only KS relation from Wang et al. (2022). Purple dashed and dotted lines are the KS relations for SFGs and mergers from Genzel et al. (2010).