Visit the NOAA FTP archive which gives daily sunspot numbers since 1980. You can also get them at the National Solar Observatory. Or visit Space Weather.com which provides more places to look. There is one site at the Belgian Solar Influences Data Center that has a detailed monthly table since 1749. The above figure was obtained from the Belgian site and shows the last solar cycle and the start of the current one, Number 23.
Copyright 1997 Dr. Sten Odenwald
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