17 January

Solar wind parameters, measured at ACE, were indicative of waning
coronal hole high speed stream (CH HSS) influence. Solar wind speed
steadily decreased from initial values near 410 km/s to end-of-period
values near 360 km/s. Total field strength values ranged from 1 nT to 4
nT while the Bz component ranged from +3 nT to -2 nT. The phi angle was
predominately configured in a negative (toward) sector throughout the
period with some variability to a positive (away) sector.

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