File:Sunspot Numbers.svg

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Sunspot_Numbers.svg‎ (SVG file, nominally 660 × 400 pixels, file size: 294 KB)

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Description
English: Numbers of sunspots since 1610.[1][2] Several periodic cycles are evident, most notably the 11 year (131 ± 14 month) cycle. The green line represents continuous monthly averages reported by the Solar Influences Data Center since 1749. The red data points represent sporadic observations since 1610.
  1. ↑ Hoyt, D.V.; K.H. Schatten (1998). "Group sunspot numbers: A new solar activity reconstruction. Part 1". Solar Physics 179: 189-219. Retrieved on 2008-07-31.
  2. ↑ Hoyt, D.V.; K.H. Schatten (1998). "Group sunspot numbers: A new solar activity reconstruction. Part 2". Solar Physics 181: 491-512. Retrieved on 2008-07-31.
Date

1 August 2008(2008-08-01)
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Self-made using gnuplot.
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Date/TimeThumbnailDimensionsUserComment
current21:02, 1 August 2008Thumbnail for version as of 21:02, 1 August 2008660 × 400 (294 KB)Slashme (Bigger text)
20:46, 1 August 2008Thumbnail for version as of 20:46, 1 August 2008660 × 400 (299 KB)Slashme ({{Information |Description={{en|1=Numbers of sunspots since 1610.<ref name='Hoyt-Schatten_a'> {{cite journal|title=Group sunspot numbers: A new solar activity reconstruction. Part 1|journal=Solar Physics|date=1998|first=D.V.|last=Hoyt|coauthors=K.H. Schat)
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Width 660
Height 400
Image title Produced by GNUPLOT 4.0 patchlevel 0
Retrieved from "http://en.wikipedia.org/wiki/File:Sunspot_Numbers.svg"
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