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This chart depicts average monthly Sunspot Number variation since 1750. This figure was produced by Leland McInnes using gnuplot. All data is from publicly available sources.


Originally from en.wikipedia; description page is/was here.


2006-02-07 (original upload date)


Leland McInnes at en.wikipedia


Licensed under the GFDL by the author; Released under the GNU Free Documentation License.

Data Sources

(red) Average monthly sunspot data:

License information

GNU head Leland McInnes on the English Wikipedia project has granted permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled " GNU Free Documentation License."
Subject to disclaimers.

Original upload log

(All user names refer to en.wikipedia)

  • 2006-02-07 02:57 Leland McInnes 1250×875×8 (194239 bytes) This chart depicts average monthly [[Sunspot Number]] variation since 1750.

The following pages on the English Wikipedia link to this file (pages on other projects are not listed):
  • Sun
  • Image:Carbon14-sunspot.png