With calmer solar activity, geomagnetic conditions were stable this week. The average daily sunspot numbers were down 7.6 points to 17.7, and the average daily solar flux dropped two points to 71. The average planetary A index declined 6.4 points to 7.9, and mid-latitude A index dropped 2.7 points to 6.4. Sunspot numbers for June 3-9 were 17, 18, 25, 12, 12, 12 and 28, with a mean of 17.7. The ...
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