23 March


Solar wind parameters indicated the likely onset of a weak positive
polarity coronal hole high speed stream (CH HSS). Solar wind speed
peaked near 550 km/s but gradually decreased and held steady between 450
km/s – 500 km/s. Total field strength values were steady in
the 4 nT – 10 nT range while the Bz component ranged from +9 nT to -4
nT. The phi angle remained in a mostly positive (away) sector
throughout the period.

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