Comparison between the thermal pressure of ionized and molecular gas. The color bar indicates the velocity difference between the RRL and p–H₂CO transitions. Left panel: n(H₂) and T_kin derived from p–H₂CO in this work. Right panel: n(H₂) and T_dust estimated from the 870 μm emission (Urquhart et al. 2018, 2022), representing the average clump pressure. The dashed black lines mark the slope of equal pressure. The plots are set to the same scale for visual comparison.