(a) Variation of IMF (left Y-axis) and solar wind velocity (right Y-axis) for the period 2015 June 17–24. (b) The energy spectrum of ions in the 30 KeV to ∼6 MeV range observed by the MAVEN SEP instrument for the period 2015 June 17–24. The Y-axis shows the energy range and the color axis shows the logarithmic particle flux. The initial period shown in white had very low fluxes (<10), whereas the gaps on 2015 June 24 correspond to the absence of good quality data. (c) The integrated SEP particle fluxes in different energy ranges (comparable to ACE measurements) estimated from the MAVEN SEP data.