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Tad Cook, K7RA, Seattle, reports: Weak solar activity persists, but Friday, August 13, was the sole spotless day in the current August 12-18 reporting week. Last week we reported 4 days with no sunspots in the previous 7 days. Average daily sunspot number increased from 9.9 last week to 17.7 during this week. Solar flux was the same, with the average inching from 73.7 to 73.8.Geomagnetic indica...
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