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13 December

Solar wind parameters, measured at ACE, were indicative of a nominal
solar wind environment. Solar wind speed decreased from initial values
near 310 km/s to end-of-period values near 270 km/s. Total field
strength was steady near 2 nT throughout the period while the Bz
component ranged from +2 to -2 nT. The phi angle remained configured in
a positive (away) sector.

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