The quiet Sun continues to baffle us. If there are no sunspots today -- and I don't expect any to emerge -- this will be the 42nd day in a row with no sunspots; July 10 was the last day we saw any spots. There is really no way to predict when the next sunspot will appear. If we see no sunspots through the end of the month, then nearly 80 percent of 2009 so far will have been spotless. Sunspot numbers for August 13-19 were 0, 0, 0, 0, 0, 0 and 0 with a mean of 0. The 10.7 cm flux was 67.2, 67.6, 68.1, 68.8, 68.1, 67.4 and 67.1 with a mean of 67.8. The estimated planetary A indices were 5, 4, 3, 3, 3, 4 and 10 with a mean of 4.6. The estimated mid-latitude A indices were 3, 2, 1, 0, 2, 2 and 8 with a mean of 2.6.
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