Before revision:  Stylized patterns resembling known processes in phenomenological thermodynamics were found, namely, population inversion and the magnetocaloric effect.
After revision:  We found that the magnitude of negative temperature peaks correlates with subsequent index movement. Moreover, a certain autocorrelation function decays as temperature increases. An effort was directed to the search for patterns similar to known physical processes, since the model hypotheses pointed to the possibility of such a similarity. A number of cases resembling known processes in phenomenological thermodynamics were found, namely, population inversion and the magnetocaloric effect.