Revision history of "File:Sunspot Numbers.png"

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  • curprev 07:37, 23 May 2017KI7LBE talk contribsm 1,213 bytes +146 add license information
  • curprev 07:26, 23 May 2017KI7LBE 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,...