3 January

Solar wind at ACE began near 550 km/s and increased to a peak of 666
km/s around 02/2100 UTC. It began to decrease afterwards, ending the
period in the low to mid 500 km/s range. The phi angle was generally
positive (away) most of the time. Bt ranged from 2-8 nT while Bz dipped
to -6 nT early in the period. These observations were consistent with
the declining influence of a coronal hole high speed stream.

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