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OK1HH > SOLAR 02.01.09 17:55l 59 Lines 3150 Bytes #999 (0) @ EU
BID : 21JOK0NAG016
Read: GUEST
Subj: Monthly Ri Report
Path: IZ3LSV<IQ0LT<IQ2GM<IW2OHX<OE6XPE<DB0RES<OK0PPL<OK0NAG
Sent: 090102/1652z @:OK0NAG.#BOH.CZE.EU [TCP/IP BBS Praha Strahov] bcm2.01e-zia
Od: OK1HH @OK0NAG.#BOH.CZE.EU (Franto) Pro: SOLAR @ EU
X-Info: Bez LOGIN hesla
:Issued: 2009 Jan 01 0927 UTC
:Product: documentation at http://www.sidc.be/products/ri
#--------------------------------------------------------------------#
# MONTHLY REPORT ON THE INTERNATIONAL SUNSPOT NUMBER #
# from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
Provisional International monthly mean Sunspot Number for
December 2008 : 0.8 (zero point eight)
Maximum : 9 on 10, 12 // Minimum : 0 on 1, 2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
Provisional daily International Sunspot Numbers for December 2008 :
1.. 0 6.. 0 11.. 8 16.. 0 21.. 0 26.. 0 31.. 0
2.. 0 7.. 0 12.. 9 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.. 9 15.. 0 20.. 0 25.. 0 30.. 0
68 cooperating stations on January 1, 09 UT
Predictions of the monthly smoothed Sunspot Number using the last
provisional value, calculated for June 2008 : 3.2 (+-5%)
SM CM SM CM SM CM
2008 Jul 3 4 2009 Jan 7 9 2009 Jul 13 21
Aug 2 5 Feb 7 10 Aug 14 23
Sep 2 6 Mar 8 12 Sep 15 25
Oct 4 6 Apr 9 14 Oct 16 28
Nov 5 7 May 10 16 Nov 17 31
Dec 6 8 Jun 12 18 Dec 19 34
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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