Peak energy for the differential energy flux of spacecraft electrons, E_peak, SC, (blue dots) and energy for the spectrum break between spacecraft and ambient plasma electrons, E_break, (orange dots) is plotted as a function of the electron core temperature T_e, core. The black dotted line indicates the mean value of E_peak, SC. The black dashed line shows the model dependency of E_break for the case of two Maxwellian populations for mean parameters derived from the dataset, the grey dashed lines show the model shifted by the standard deviation, σ_model, of the difference between the model and E_break from the dataset.