MagEIS-B pitch angle distribution on 2014 September 12 from 17:00 to 21:00 UT at 31.9–2249 keV energy channels. Before the magnetopause compression (∼17:30 UT), all energy levels presented 90°-peaked PAD shapes. Afterward, only energies above ∼132 keV presented a butterfly PAD shape, showed here as the dropout in the electron flux at a 90° pitch angle.