The K7RA Solar Update

Posted by cymoo | Ham Radio News | Saturday 31 January 2009 8:13 pm


On Tuesday, January 27, we saw another one of those "almost-a-sunspot" emerge in the Sun’s low latitude, so it was probably an old Solar Cycle 23 spot; it was gone the next day. Sunspot numbers for January 22-28 were 0, 0, 0, 0, 0, 0 and 0 with a mean of 0. The 10.7 cm flux was 69, 70, 68.8, 69.8, 69.9, 69.7 and 69.5 with a mean of 69.5. The estimated planetary A indices were 1, 1, 1, 1, 10, 4 and 2 with a mean of 2.9. The estimated mid-latitude A indices were 0, 1, 1, 1, 9, 2 and 1 with a mean of 2.1.

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