Solar wind summary

A shock passage was observed at 26/2145 UTC. There were distinct
discontinuities in both density and temperature, along with a jump in
wind speeds from 280 km/s to 312 km/s and a rise in Bt from 4 nT to 7
nT. Before shock arrival, wind speed ranged between a high of about 310
km/s to a low of near 275 km/s. The interplanetary magnetic field (IMF)
Bt varied between 2 and 4 nT while the Bz component did not vary much
beyond +/- 2 nT. Phi was in a predominately negative (towards)
orientation through about 26/1630 UTC when it switched to a more
positive (away) orientation through until about 27/0900 UTC.

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