12th October

Solar wind conditions were fairly nominal during the period. Total field
(Bt) measurements ranged from an early high of 8 nT and gradually
decreased to a reading of about 4 nT late in the period. IMF Bz was
mostly positive while solar wind speeds were stable between 325-360
km/s. Phi measurements indicated a solar sector boundary (SSB) crossing
from a positive (away) sector to a negative (towards) sector at 11/1118
UTC and remained in a negative orientation through the summary period.

Leave a Reply