6 December


Solar wind parameters, as measured by the ACE spacecraft, remained at
background conditions. Solar wind speed reached a peak of 381 km/s at
05/1009 UTC, but remained in the mid 300 km/s range for most of the
period. Total IMF fluctuated slightly between 5 nT and 1 nT for the
first half of the period, before steadily climbing from 1 nT to end the
period near 4 nT. IMF Bz varied between +4 nT and -2 nT. Phi angle
remained in a predominately positive (away) orientation throughout the
period, with a brief oscillation to negative (towards) near the end of
the period.

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