Comparison between observed and best-fit model intensities for H₂, CO and H₂O (top, middle and lower panels, respectively) displayed in excitation diagrams. Open circles and rectangles correspond to observed fluxes and best matching model predictions, respectively. The C-type shock models from KN’96 and FPDF’10 are presented in the top and center columns, and J-type shocks from FPDF’10 in the right column. Best-fit model parameters are reported on each panel.