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OK0NAG > SOLAR 01.09.09 09:25l 101 Lines 3616 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
August 2009 : 0.0 (zero point zero)
all zeroes
Provisional daily International Sunspot Numbers for August 2009 :
1.. 0 6.. 0 11.. 0 16.. 0 21.. 0 26.. 0 31..
0
2.. 0 7.. 0 12.. 0 17.. 0 22.. 0 27.. 0
3.. 0 8.. 0 13.. 0 18.. 0 23.. 0 28.. 0
4.. 0 9.. 0 14.. 0 19.. 0 24.. 0 29.. 0
5.. 0 10.. 0 15.. 0 20.. 0 25.. 0 30.. 0
63 cooperating stations on September 1, 07 UT
Predictions of the monthly smoothed Sunspot Number using the last
provisional value, calculated for February 2009 : 1.9 (+-5%)
SM CM SM CM SM CM
2009 Mar 2 3 2009 Sep 14 8 2010 Mar 22 19
Apr 2 3 Oct 15 9 Apr 23 21
May 2 4 Nov 16 10 May 25 23
Jun 11 5 Dec 18 12 Jun 0 26
Jul 12 6 2010 Jan 19 14 Jul 0 28
Aug 13 7 Feb 20 16 Aug 0 31
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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