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OK0NAG > SOLAR 03.09.10 10:16l 103 Lines 3778 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 2010 : 19.6 (nineteen point six)
Maximum : 44 on 11 // Minimum : 0 on 21, 22, 23
Provisional daily International Sunspot Numbers for August 2010 :
1.. 16 6.. 34 11.. 44 16.. 34 21.. 0 26.. 15 31.. 20
2.. 16 7.. 32 12.. 33 17.. 17 22.. 0 27.. 8
3.. 9 8.. 25 13.. 27 18.. 15 23.. 0 28.. 8
4.. 21 9.. 36 14.. 22 19.. 10 24.. 8 29.. 18
5.. 34 10.. 38 15.. 25 20.. 8 25.. 15 30.. 19
68 cooperating stations on September 1, 09 UT
Predictions of the monthly smoothed Sunspot Number using the last
provisional value, calculated for February 2010 : 10.6 (+-5%)
SM CM SM CM SM CM
2010 Mar 12 14 2010 Sep 20 40 2011 Mar 34 66
Apr 14 17 Oct 22 46 Apr 36 68
May 13 21 Nov 24 50 May 39 71
Jun 15 25 Dec 26 55 Jun 42 73
Jul 16 30 2011 Jan 29 59 Jul 45 75
Aug 18 35 Feb 31 63 Aug 48 79
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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