Continued from Fig. B.1 but for source IRAS 10378+1109. The green data points in the bottom-left panel showing the CO SLED correspond to the fluxes of the systemic velocity components (with central velocity v_cen ≈ 12 km s⁻¹), resulting from the simultaneous fit. If considering only this systemic component, the CO SLED looks much less extreme, and in agreement with subthermal excitation conditions. Nonetheless, since the data analyzed in this work does not allow us to determine the origin of the velocity offset observed in the CO(7−6) spectrum, and for consistency with the other sources, we use the modeling results obtained by considering the CO SLED that uses the total velocity-integrated CO fluxes.