Monthly Ri Report
Provisional daily, monthly and monthly smoothed sunspot numbers.Source | SIDC (RWC-Belgium) |
Frequency | Monthly |
Format | Plain text |
Mail header | Monthly Ri Report |
SIDC code | ri |
Latest issue
:Issued: 2024 Nov 01 09:44 UTC :Product: documentation at http://www.sidc.be/products/ri #-------------------------------------------------------------# # MONTHLY TABLE OF THE INTERNATIONAL TOTAL SUNSPOT NUMBER # # AND 12-MONTH PREDICTIONS from the World Data Center SILSO # #-------------------------------------------------------------# Provisional International monthly mean Sunspot Number for October 2024 : 166.3 (one hundred and sixty-six point three) Maximum : 246 on 27, 28 // Minimum : 109 on 15 Provisional daily International Sunspot Numbers for October 2024 : 1..212 6..169 11..136 16..119 21..162 26..220 31..213 2..210 7..163 12..126 17..141 22..119 27..246 3..209 8..142 13..137 18..137 23..122 28..246 4..211 9..141 14..136 19..133 24..136 29..224 5..182 10..141 15..109 20..132 25..178 30..206 63 cooperating stations on November 1, 10 UT Predictions of the monthly smoothed Sunspot Number using the last provisional value, calculated for April 2024 : 144.4 (+-5%) SM CM SM CM SM CM 2024 May 152 147 2024 Nov 162 145 2025 May 145 128 Jun 159 148 Dec 159 143 Jun 143 126 Jul 174 150 2025 Jan 155 139 Jul 141 123 Aug 171 150 Feb 152 136 Aug 139 120 Sep 168 150 Mar 150 134 Sep 137 119 Oct 165 148 Apr 147 132 Oct 135 119 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 #--------------------------------------------------------------------# # World Data Center SILSO # # Sunspot Index and Long-term Solar Observations # # Royal Observatory of Belgium # # Tel.: ../32/(0)2/373 02 33 Fax : ../32/(0)2/374 98 22 # # Please do not reply directly to this message # # For more information, contact: silso.info@oma.be # # or visit first our Web site at: http://www.sidc.be/silso # # To unsubscribe, visit http://sidc.be/registration/unsub.php # #--------------------------------------------------------------------# ---------------------------------------------------------------------- | Legal notices: | | - Intellectual Property Rights: | | http://www.astro.oma.be/common/internet/en/data-policy-en.pdf | | - Liability Disclaimer: | | http://www.astro.oma.be/common/internet/en/disclaimer-en.pdf | | - Use and processing of your personal information: | | http://www.astro.oma.be/common/internet/en/privacy-policy-en.pdf | ----------------------------------------------------------------------
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