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Solar wind speed at the ACE spacecraft slowly decline through the period
to end near 450 km/s, signalling the end of the high speed stream. ACE
remained in a positive solar sector under benign magnetic conditions.
Bt remained at or below 5 nT and Bz never dropped below -5 nT.
Aurora Service was set up by me (Tony) in my spare time. I am a computer programmer and aurora watcher, so I combined both experiences to create this site to help aid my aurora viewing. It has kept growing since.