Demonstrating the sensitivity of each parameter on the CO fundamental band of Model P at day 385 (see Table 1), where the temperature profile has been optimized for each. Panel (A) shows the best-fit solution and continuum. Each of the following panels keeps the optimized parameters the same but shows the effect of: (B) the total molecular mass (M), (C) the inner temperature (T₁), (D) the density structure (n), (E) the inner velocity edge (v₁), (F) the width of the molecular region (Δv), (G) the clump density contrast (f_c), (H) the clump size (r_R), and (I) the clump shape (ϵ). Figures 6 and 7 show the ﹩{\chi }_{* }^{2}﹩ convergences of the fits.