Upper panel: Inverse of the overdensity of selfgravitating clouds as a function of the turbulent velocity dispersion. The solid line corresponds to an outlier-resistant linear bisector fit, and the dashed line shows Φ_V = v_turb/(1 km s⁻¹)/7000. Lower panel: Star formation efficiency with respect to the molecular gas as function of (v_turb × Ω). The solid and dotted lines correspond to an outlier-resistant linear bisector fit and its dispersion. The dashed line corresponds to SFE = 10⁻³ v_turbΩ.