Mass distributions for cloud complexes with n > 10 cm⁻³ (top), big clouds with n > 10^1.5 cm⁻³ (middle), and clouds with n > 10² cm⁻³ (bottom). The lines show the median values, while the shaded regions show the 16th–84th percentile range. All distributions shown contain structures from multiple snapshots, where consecutive snapshots are 25 Myr apart. The dashed line shows dN/d log(M) ∝ M⁻¹, i.e., dN/dM ∝ M⁻².