This shows the thermal and physical state along a vertical line at n_H= 10³ cm⁻³ in the previous contour plots. The left-hand panels are the extra-heating case while the right-hand panels are the cosmic ray case. The non-radiative rates are the independent axis in each panel. The range in both was adjusted so that the phase transition, where many physical quantities change abruptly, occurs near the middle of the independent axis. The ionization and temperature increase to the right-hand side as the non-radiative heating rates increase. The top right-hand panel shows the cosmic ray heating, ionization and line-excitation efficiencies. Cosmic rays ionize and excite predominantly neutral gas and heat ionized gas. The abrupt change in temperature, shown in the second to bottom pair of panels, is more extreme in the extra-heating case. The two lower panels show the physical state of hydrogen. There is a mix of atomic and molecular gas in the cosmic ray case due to the ionization and dissociation that they produce in cold neutral gas.