Solar wind measurements at the ACE spacecraft indicated steady solar
wind speeds with a slight gradual decrease from around 380 km/s down to
near 340 km/s. The total IMF Bt also decreased over the period from
predominately between 4-6 nT to an average of 3nT. While the Bz
component varied, it was predominately near +1 nT. Phi angle was
predominantly in a positive (away) orientation.