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: 2018 Dec 01 09:30 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
November 2018 : 5.9 (five point nine)

Maximum : 15 on 12, 16, 17, 24 // Minimum : 0 on 1, 2, 3, 4, 5, 6, 7, 11,
20, 21, 22, 23, 27, 28, 29, 30

Provisional daily International Sunspot Numbers for November 2018 : 

      1..  0    6..  0   11..  0   16.. 15   21..  0   26.. 10
      2..  0    7..  0   12.. 15   17.. 15   22..  0   27..  0
      3..  0    8.. 11   13.. 11   18.. 14   23..  0   28..  0
      4..  0    9.. 11   14.. 11   19.. 12   24.. 15   29..  0
      5..  0   10.. 11   15.. 13   20..  0   25.. 14   30..  0

70 cooperating stations on December 1, 10 UT

Predictions of the monthly smoothed Sunspot Number using the last
provisional value, calculated for May 2018 :   7.5 (+-5%)

            SM    CM                 SM    CM                 SM    CM     

2018 Jun     8     7     2018 Dec     4     4     2019 Jun     1    11
     Jul     8     6     2019 Jan     3     4          Jul     0    13
     Aug     7     5          Feb     2     4          Aug     0    16
     Sep     6     4          Mar     2     6          Sep     0    18
     Oct     5     4          Apr     2     8          Oct     0    21
     Nov     4     4          May     1    10          Nov     1    25

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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