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OK0NAG > SOLAR 01.04.10 11:44l 103 Lines 3770 Bytes #999 (0) @ EU
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Subj: 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
March 2010 : 15.4 (fifteen point four)
Maximum : 25 on 4 // Minimum : 0 on 6, 9, 10
Provisional daily International Sunspot Numbers for March 2010 :
1.. 15 6.. 0 11.. 22 16.. 15 21.. 14 26.. 14 31.. 17
2.. 24 7.. 8 12.. 23 17.. 18 22.. 11 27.. 22
3.. 23 8.. 11 13.. 20 18.. 19 23.. 9 28.. 20
4.. 25 9.. 0 14.. 21 19.. 14 24.. 11 29.. 21
5.. 18 10.. 0 15.. 17 20.. 9 25.. 15 30.. 21
62 cooperating stations on April 1, 10 UT
Predictions of the monthly smoothed Sunspot Number using the last
provisional value, calculated for September 2009 : 6.1 (+-5%)
SM CM SM CM SM CM
2009 Oct 7 8 2010 Apr 16 26 2010 Oct 28 51
Nov 8 11 May 17 29 Nov 31 55
Dec 10 13 Jun 19 33 Dec 34 58
2010 Jan 12 16 Jul 21 37 2011 Jan 37 62
Feb 13 19 Aug 23 42 Feb 41 65
Mar 14 22 Sep 26 47 Mar 45 67
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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