Relation between the mean SFR rate and the mean molecular gas mass in our galaxy samples, i.e., integrated Kennicutt-Schmidt law. The solid line and the dashed line are the center of the relation fitted by Sargent et al. (2014) on a compilation of data for main-sequence galaxies and starbursts, respectively. The dotted lines represent the 1σ uncertainties on these relations. The triangles and diamonds represent the average position of massive, main-sequence galaxies in this diagram assuming a broken FMR and an universal FMR, respectively. The squares indicates the average position of strong starbursts.