Substructure detection rate as a function of R₆₈ for sources with effective angular resolution ﹩{\theta }_{D}/{\theta }_{{\rm{res}}}\geqslant 3﹩. Bar heights show the observed fraction of disks with detected substructure, with the label giving the number of substructured disks over the total number of disks in that bin. Uncertainties represent 1σ Wilson score confidence intervals.