4th September

Solar wind speed at the ACE spacecraft reached a peak speed of 443 km/s
at 03/2346Z and ended the period near 385 km/s. Total IMF remained
fairly steady near 5 nT, while IMF Bz ranged from +4 nT to a maximum
southward component of -5 nT. Phi remained in a mostly positive (away)
orientation throughout the period.

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