Heavy ion spectrograms for the event in LETA/EPI-Lo panel pairs (upper and lower panels, respectively). Panels a and b: He intensities; c and d: oxygen intensities; and e and f: iron. See text for further explanation of the instrumental effects apparent in panel a. Solid vertical lines mark the passages of shocks and pairs of dashed lines indicate the magnetic cloud periods. The horizontal orange bar at the top indicates the integration period for the decay spectra.