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OK0NAG > SOLAR 01.07.10 07:20l 102 Lines 3759 Bytes #999 (0) @ EU
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Subj: Monthly Ri_hemispheric Report
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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
June 2010 : 13.5 (thirteen point five)
Maximum : 33 on 11, 12 // Minimum : 0 on 15, 16
Provisional daily International Sunspot Numbers for June 2010 :
1.. 11 6.. 9 11.. 33 16.. 0 21.. 10 26.. 13
2.. 13 7.. 13 12.. 33 17.. 9 22.. 11 27.. 8
3.. 15 8.. 10 13.. 18 18.. 9 23.. 10 28.. 8
4.. 20 9.. 21 14.. 10 19.. 19 24.. 9 29.. 16
5.. 19 10.. 28 15.. 0 20.. 11 25.. 12 30.. 8
70 cooperating stations on July 1, 05 UT
Predictions of the monthly smoothed Sunspot Number using the last
provisional value, calculated for December 2009 : 8.3 (+-5%)
SM CM SM CM SM CM
2010 Jan 9 11 2010 Jul 19 34 2011 Jan 33 62
Feb 11 14 Aug 21 38 Feb 36 65
Mar 13 17 Sep 23 44 Mar 39 67
Apr 14 21 Oct 25 49 Apr 43 69
May 15 25 Nov 28 53 May 46 72
Jun 17 29 Dec 30 58 Jun 50 74
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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