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Flux as a function of L‐shell for four different energies. Both outbound and inbound passes are plotted and are color‐coded by orbit. Orbit 487, starting Feb. 28 at 5:11 UT (blue); orbit 488 (cyan); orbit 489 (green); orbit 490 (orange); and orbit 491, ending March 2 at 02:00 UT (red). Each orbit takes ~9 hours. The inbound and outbound legs sample different local times. Substorm injections, filling of the slot region, and earthward penetration of the outer zone are all apparent.
