Gas kinetic temperatures a) and integrated intensities b) for different Ṁ_input-values and different cooling mechanisms. The colour coding in both panels is as follows: black was used for omission of H₂O-cooling, blue for inclusion of H₂O-cooling, green for inclusion of H₂O-cooling ten times stronger than by default, yellow for a temperature power law, as in Eq. (10), with ϵ = 0.5, and red for ϵ = 0.7. In the lower panel, the different values of the input-mass-loss rate are indicated with diamonds and triangles for Ṁ  = 10^-7 M_⊙  yr^-1 and 10^-5 M_⊙  yr^-1, respectively. See discussion in Sect. 3.5.2.