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Sunspot numbers for March 2009 April 11, 2009

Posted by honestclimate in sunspots.
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Sunspot numbers for March 2009


Month 2009 2008
Jan 1.5 3.3
Feb 1.4 2.1
Mar 0.7 9.3
Apr 2.9
May 3.2
Jun 3.4
Jul 0.8
Aug 0.5
Sep 1.1
Oct 2.9
Nov 4.1
Dec 0.8

Source

Comments»

1. Mr. M - April 11, 2009

First!

2. Skeptic Tank - April 12, 2009

Some clarification, please, for us lay-people – What exactly defines a “sunspot”? Must it appear a certain latitude? Must it have a certain polarity or flux level on the magnetogram? And what are the fractional components in that table (0.7)?


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