FEBRUARY 2010


        PROVISIONAL INTERNATIONAL NORMALIZED HEMISPHERIC SUNSPOT NUMBERS


               Date             Ri              Rn              Rs
       __________________________________________________________________

                 1              11              11               0
                 2               9               9               0
                 3               9               9               0
                 4               8               8               0
                 5               8               8               0
                 6              24              24               0
                 7              21              21               0
                 8              39              32               7
                 9              37              29               8
                10              33              33               0
                11              29              29               0
                12              27              27               0
                13              28              28               0
                14              22              22               0
                15              20              20               0
                16              20              20               0
                17              28              16              12
                18              15               0              15
                19              13               0              13
                20              13               0              13
                21              11               0              11
                22              11               0              11
                23              10               0              10
                24              20               8              12
                25              19               9              10
                26              18               9               9
                27               9               9               0
                28               9               9               0
       __________________________________________________________________

       MONTHLY MEAN :          18.6            13.9             4.7

       COOPERATING STATIONS :   58              56              56

                 PILOT STATION : Specola Solare Ticinese, Locarno

       __________________________________________________________________

                   Reproduction permitted if source mentionned
                         R. Van der Linden