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OK0NAG > SOLAR 01.02.10 18:35l 103 Lines 3777 Bytes #999 (0) @ EU
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#--------------------------------------------------------------------#
# MONTHLY REPORT ON THE INTERNATIONAL SUNSPOT NUMBER #
# from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
Provisional International monthly mean Sunspot Number for
January 2010 : 13.1 (thirteen point one)
Maximum : 26 on 23, 24 // Minimum : 0 on 6, 7, 19
Provisional daily International Sunspot Numbers for January 2010 :
1.. 12 6.. 0 11.. 23 16.. 16 21.. 12 26.. 17 31.. 11
2.. 14 7.. 0 12.. 22 17.. 12 22.. 21 27.. 9
3.. 11 8.. 10 13.. 21 18.. 9 23.. 26 28.. 8
4.. 10 9.. 10 14.. 18 19.. 0 24.. 26 29.. 8
5.. 7 10.. 15 15.. 18 20.. 9 25.. 23 30.. 8
61 cooperating stations on February 1, 15 UT
Predictions of the monthly smoothed Sunspot Number using the last
provisional value, calculated for July 2009 : 3.6 (+-5%)
SM CM SM CM SM CM
2009 Aug 4 5 2010 Feb 4 20 2010 Aug 4 43
Sep 5 6 Mar 4 23 Sep 5 47
Oct 5 9 Apr 4 27 Oct 5 51
Nov 5 11 May 4 30 Nov 6 55
Dec 4 14 Jun 4 34 Dec 6 58
2010 Jan 4 17 Jul 4 39 2011 Jan 7 62
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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