This past week, the average daily sunspot numbers were up 16.2 points to 101.1, while the average daily solar flux remained about the same, rising from 118.5 to 119. An eruption on March 15 caused a coronal mass ejection (CME) that hit Earth on March 17, causing the planetary A index to jump to 46. Sunspot numbers for March 14-20 were 133, 105, 90, 126, 116, 68 and 70, with a mean of 101.1. The…

American Radio Relay League | Ham Radio Association and Resources

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