Fitting our simulations on an experimental spectral power of the signal provided by the probe operating in phase mode () on 20 March 2016. The x-axis has been normalized by 343 kHz. The distances from the Sun of comet 67P and the altitudes of the spacecraft were 2.62 AU and 12.07 km, respectively. The input parameters for the simulation are n_c = 1162 cm^-3, n_h = 290 cm^-3, T_c = 0.29 eV, T_h = 8.85 eV, and R = 110 cm.