7 April

Solar wind speed at the ACE spacecraft remained in the mid to upper 300
km/s range throughout the period. Phi remained negative. Bz was
generally neutral while Bt decreased slightly from a high of 13 nT at
the beginning of the period to end near 9 nT. The EPAM instrument
indicated a slight rise in low energy particle flux suggesting the
presence of an approaching transient feature.

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