12 December

Solar wind, as measured by the ACE spacecraft, remained at background
conditions throughout the period. Wind speed reached a peak of 371 km/s
at 11/1410 UTC before steadily decreasing to end the period near 320
km/s. The total interplanetary magnetic field fluctuated between 0 nT
and 3 nT while the Bz component wavered between +1 nT/-3 nT. Phi angle
was positioned in a predominately positive (away) orientation, but had
periodic oscillations into a negative (toward) orientation throughout
the period.

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