Logarithmic column-density bin-averaged line intensities versus the total H-nucleus column density, N_obs, for the H₂ lines in Table 1. The blue and red lines correspond to Models 4 and 5, respectively, with the filled regions representing ±2σ. The dashed-dot black line shows the results for Model 3. The shadowed region shows the JWST sensitivity with a signal-to-noise ratio of 3 with 1.25 h of integration and 50 shutters (P22).