Volume (solid line) and mass (dot–dashed line) weighted temperature histograms for the model with v_rms = 7.70 km s⁻¹ at 15 kpc. The vertical lines correspond, from the right, to the minimal WNM temperature (dotted line), T₅₀ (solid line), the thermal equilibrium CNM temperature at the initial pressure (black dashed line), and the minimal WNM temperature (grey dashed line).