Electron PSD (upper panels) and DEF (lower panels) as measured by SWA-EAS are shown (black crosses) as a function of the energy for the selected samples, A (left) and B (right). Measured data are over-plotted by a fit with a simple model (grey line) composed from a sum of two Maxwellian distributions for the core (red) and halo (green) ambient electron populations. Displayed fitted plasma parameters are corrected to the spacecraft potential energy measured by RPW (vertical dashed black line).