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The ARRL Solar Update

Solar activity reached moderate levels early this week. The
strongest event was an M1.4 flare observed on February 11 in Region
4366. This region also produced nine C-class flares.
 
Region 4373 produced a C1.8/Sf flare on February 11. This region
displayed some minor area growth. Regions 4369 and 4371 exhibited
some minor decay. The other spotted regions remained unchanged. New
Region 4375 was number…

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