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  • latest020212

    02/03/2012 | The K7RA Solar Update

    Here are some yearly averages that we have neglected at the beginning of the year. These are the average daily sunspot numbers for whole calendar years, from 1994-2011: 48.1, 28.7, 13.2, 30.7, 88.7, 136.3, 173, 170.3, 176.7, 109.2, 68.6, 48.9, 26.1, 12.8
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  • latest011912

    01/20/2012 | The K7RA Solar Update

    New sunspot groups appeared on every day over the past week. On January 12, new sunspot group 1396 appeared, and the next day two more -- 1397 and 1398 -- popped into view. On January 14, four new sunspot groups appeared: 1399, 1400, 1401 and 1402. Januar
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  • latest011212

    01/13/2012 | The K7RA Solar Update

    The average daily sunspot numbers were up this week by a tiny bit, from 88.1 to 90.6, while the average daily solar flux was down slightly, from 136.2 to 134.9. Sunspot numbers for January 5-11 were 99, 118, 110, 90, 90, 63 and 64, with a mean of 90.6. Th
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  • latest120811

    12/09/2011 | The K7RA Solar Update

    What happened to that new “grand minima”? Solar Cycle 24 just keeps rolling along -- for the first seven days in December, there were eight new sunspot groups. December 5 had the largest sunspot coverage over the past week, with a daily sunspot number of
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  • latest120211

    12/02/2011 | The K7RA Solar Update

    Solar Cycle 24 continues its upturn. We have a new high for the trailing three month daily sunspot number average. Starting with the three month period ending in December 2010 and going through November 2011, they were 30.1, 35.3, 55.7, 72.3, 74.4, 65.9,
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  • latest092911

    09/30/2011 | The K7RA Solar Update

    Our Sun has been very active this past week, with the average solar flux rising nearly 12 points to 155.5, while the average daily sunspot numbers dropped nearly 41 points to 96.1. This implies fewer, but more intense, sunspots. Sunspot numbers for Septem
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  • latest072111

    07/22/2011 | The K7RA Solar Update

    The average daily sunspot numbers for the week rose nearly 27 points to 92.4, while the average daily solar flux increased more than 9 points to 98.2. Sunspot numbers for July 14-20 were 79, 90, 75, 101, 127, 96 and 79, with a mean of 92.4. The 10.7 cm fl
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  • latest070711

    07/08/2011 | The K7RA Solar Update

    The average daily sunspot numbers for the past week dropped less than a point -- from 42 to 41.6 -- compared to the previous week, while the average daily solar flux was down more than 5 points to 86.2. Sunspot numbers for June 30-July 6 were 34, 51, 54,
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