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OK0NAG > SOLAR 01.12.08 11:13l 100 Lines 3635 Bytes #999 (0) @ EU
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Subj: Monthly Ri Report
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Date: Mon, 1 Dec 2008 10:07:36 GMT
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Subject: Monthly Ri Report
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#--------------------------------------------------------------------#
# MONTHLY REPORT ON THE INTERNATIONAL SUNSPOT NUMBER #
# from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
Provisional International monthly mean Sunspot Number for
November 2008 : 4.1 (four point one)
Maximum : 14 on 12 // Minimum : 0 on 7, 8, 9, 10, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30
Provisional daily International Sunspot Numbers for November 2008 :
1.. 9 6.. 7 11.. 12 16.. 8 21.. 0 26.. 0
2.. 11 7.. 0 12.. 14 17.. 7 22.. 0 27.. 0
3.. 11 8.. 0 13.. 9 18.. 0 23.. 0 28.. 0
4.. 10 9.. 0 14.. 8 19.. 0 24.. 0 29.. 0
5.. 8 10.. 0 15.. 8 20.. 0 25.. 0 30.. 0
67 cooperating stations on December 1, 10 UT
Predictions of the monthly smoothed Sunspot Number using the last
provisional value, calculated for May 2008 : 3.5 (+-5%)
SM CM SM CM SM CM
2008 Jun 3 4 2008 Dec 6 10 2009 Jun 12 21
Jul 3 5 2009 Jan 7 11 Jul 13 23
Aug 2 6 Feb 8 12 Aug 14 26
Sep 4 7 Mar 9 14 Sep 15 29
Oct 4 8 Apr 10 16 Oct 17 31
Nov 5 9 May 11 18 Nov 18 34
SM : SIDC classical method : based on an interpolation of Waldmeier's
standard curves; the estimated error ranges from 7% (first month) to
35% (last month)
CM : Combined method : the combined method is a regression technique
coupling a dynamo-based estimator with Waldmeier's idea of standard
curves, due to K. Denkmayr.
ref. : K. Denkmayr, P. Cugnon, 1997 : "About Sunspot Number Medium-Term
Predictions", in "Solar-Terrestrial Prediction Workshop V", eds.
G. Heckman et al., Hiraiso Solar Terrestrial Research Center, Japan, 103
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