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Observed (dotted red curves) and calculated (solid black curves) proton differential intensities for 10 out of 19 energy channels simulated for the 2000 April 4 SEP event. The calculated profiles are obtained by using the Q(VR) fits displayed in the left panel of Figure 7 and listed in Appendix B. The two top left panels also show the modelled and observed first-order anisotropy component parallel to the magnetic field, A1/A0. Arrows mark the starting time of the X-ray flare and vertical lines the time of the shock crossing by the ACE spacecraft.
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