Monthly Ri_hemispheric Report

:Issued: 2026 Jan 01 09:57 UTC
:Product: documentation at http://www.sidc.be/products/ri_hemispheric
#--------------------------------------------------------------------#
# MONTHLY TABLE OF THE TOTAL AND HEMISPHERIC SUNSPOT NUMBERS         #
# from the World Data Center SILSO                                   #
#--------------------------------------------------------------------#


                                  DECEMBER 2025


        PROVISIONAL INTERNATIONAL NORMALIZED HEMISPHERIC SUNSPOT NUMBERS


               Date             Sn           Sn(N)           Sn(S)
       __________________________________________________________________

                 1             156              51             105
                 2             180              64             116
                 3             186              52             134
                 4             186              51             135
                 5             176              52             124
                 6             171              56             115
                 7             161              55             106
                 8             164              58             106
                 9             155              43             112
                10             132              42              90
                11             121              30              91
                12              98              27              71
                13              86              31              55
                14              71              27              44
                15              77              33              44
                16              78              44              34
                17              82              50              32
                18              67              39              28
                19              50              34              16
                20              59              45              14
                21              68              48              20
                22              82              55              27
                23             110              76              34
                24             131              72              59
                25             128              71              57
                26             126              66              60
                27             150              61              89
                28             162              60             102
                29             145              44             101
                30             143              41             102
                31             143              51              92
       __________________________________________________________________

       MONTHLY MEAN :         124.0            49.3            74.7

       COOPERATING STATIONS :   61              54              54

                 PILOT STATION : Specola Solare Ticinese, Locarno

       __________________________________________________________________

                   Reproduction permitted if source mentionned



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