Average daily sunspot numbers dropped from 109.1 on July 2-8 to 73.7 in the past week, July 9-15. Average daily solar flux dropped from 123.2 to 114.8 over the same two periods. Geomagnetic indices were more active, with average daily planetary A index increasing from 10 to 13.7, and average mid-latitude A index going from 8.9 to 12.3.
The geomagnetic field was active on July 11 when the mid-lat...
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The geomagnetic field was active on July 11 when the mid-lat...
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