Instrumental response of the instrument MPPE/MEA simulated using our extended QL model for both strong ϵ_nρ_i = 1 and weak ϵ_nρ_i = 0.5 gradient cases (left and right panels), in the direction parallel to the magnetic field. Unperturbed electron distribution function using temperature T_e = 50 eV in blue, and results of eQL model at time t = τ_NL in red. The dashed vertical line indicates the energy from which the supra-thermal electron density N_e, sup is computed.