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ARI e ARRL In quest'area trovate notizie provenienti dal sito ufficiale dell'ARRL e dall'ARI

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Old 15-05-20, 14:33   #1
USA_bot
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The K7RA Solar Update

No sunspots appeared last week. The previous seven days had only one big sunspot group on one day, with a sunspot number of 35. Over the seven-day period this averaged out to a sunspot number of 5, so average daily sunspot numbers declined from 5 to 0 this week.

Average daily solar flux also declined, by one point from 69.5 to 68.5.

Geomagnetic indicators were quiet, with average daily planetary ...



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