Solar Activity â Past, Present, and Future - leif.org

The Wolf Number, Zürich Sunspot Number, and International Sunspot Number are all synonyms for the same data, today maintained by the Solar Influences Data Center, SIDC, in Brussels, Belgium

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  Activity, Number, Sunspots, Sunspot number

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Rudolf Wolf and the Sunspot Number - leif.org

www.leif.org

2. The Sunspot Number ~1856 • Wolf Number = k. W ... Solar Activity: Radio Flux at 2.8 GHz [or 10.7 cm] 0 50 100 150 200 250 300 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 Composite F10.7 Solar Flux sfu Monthly Averages 0 50 100 150 200 250 300 350 400

  Activity, Number, Sunspots, Sunspot number

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chandra.harvard.edu

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  Activity, Record, Number, Historical, Sunspots, Sunspot activity, The historical sunspot record

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growth-dynamics.com

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eo.ucar.edu

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