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Fig. 4


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GOES fluences of four PAMELA documented SPEs plotted at the bowtie energies for four HEPAD channels, compared with ER spectra fitted from PAMELA data. The fluences were scaled with correction factors of 0.614, 1.02, 1.19, and 10.50, respectively, for P8–P11. Symbols in different colours represent fluences derived by subtracting backgrounds at different times, as in Figure 3.

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