Revision history of "File:Sunspot Numbers.png"

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  • curprev 08:37, 23 May 2017‎ KI7LBE talk contribs‎ m 1,213 bytes +146‎ add license information
  • curprev 08:26, 23 May 2017‎ KI7LBE talk contribs‎ 1,067 bytes +1,067‎ This figure summarizes sunspot number observations. Since c. 1749, continuous monthly averages of sunspot activity have been available and are shown here as reported by the Solar Influences Data Analysis Center, World Data Center for the Sunspot Index,...
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