Fig. 5.
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Peak proton flux (IP) at E > 10 MeV for GLEs that occurred from 1976 to 2021 (blue squares). GLE58 (orange square), GLE40 and GLE50 (purple squares), and GLE73 (red square) are indicated. Mean (1850 pfu) and median (321 pfu) values of the peak proton flux are presented as horizontal dashed pink lines. Monthly and smoothed monthly sunspot numbers are shown as grey and black lines.
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