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Time-intensity profiles for large F30 SEP events in August 1972, October 1989, and July 2000, showing in each case the contributions to the total event fluences from the initial (or only) major event (light blue cross-hatching), its shock peak (red), and subsequent events (purple). The dashed red vertical lines indicate the timing of the shock peaks. The color coded >30 MeV fluence values for each component are given with the total fluence in black; the units are pr cm−2.
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