MONTHLY REPORT OF SUNSPOTS OBSERVATION December 2025


KWASAN OBSERVATORY  Yamasina Kyoto Japan
100mm Refractor
Seeing : 1-5
OBSERVER : M.Kamobe,M.Teranishi,Y.Kawabata,M.Goto


Date Time(U.T.)  N-HemisphereS-HemisphereDisc Center Total        10g+f Seeing Observer
       h     m     g     f     g     f     g     f     g     f
  1    1     10    2     7     6     23    1     3     8     30    110    2/5    K
  2    3     0     4     10    6     41    1     4     10    51    151    1/5    K
  3
  4    1     0     3     9     5     57    3     34    8     66    146    2/5    K
  5    0     30    3     11    5     52    4     49    8     63    143    2/5    T
  6    2     0     3     11    4     45    6     52    7     56    126    2/5    G
  7
  8    3     45    4     9     4     30    6     34    8     39    119    1/5    K
  9    1     15    3     12    5     27    4     19    8     39    119    1/5    K
 10    4     45    2     9     5     25    0     0     7     34    104    3/5    T
 11    4     45    2     7     6     26    4     15    8     33    113    4/5    K
 12
 13    1     40    2     4     3     15    3     15    5     19    69     1/5    G
 14
 15    1     5     1     6     2     11    1     6     3     17    47     2/5    K
 16    1     15    1     5     3     10    2     9     4     15    55     1/5    K
 17
 18    1     47    3     7     2     4     1     4     5     11    61     1/5    K
 19    1     45    5     7     1     1     2     4     6     8     68     4/5    T
 20    1     36    4     7     1     2     1     2     5     9     59     2/5    G
 21
 22    5     30    3     11    1     11    2     13    4     22    62     1/5    K
 23    1     15    5     24    2     7     3     12    7     31    101    1/5    K
 24
 25
 26
 27
 28    4     40    4     13    6     25    4     15    10    38    138    3/5    G
 29
 30
 31

            Sum    54   169    67   412    48   290               1791
            (R)  39.4        60.1        42.8                     99.5

     Days    18                                                                S:Sugiura
                                                                               K: Kamobe
                                                                               H:Himoto
                                                                               A:Anan
                                                                               MH:Hagino
                                                                               AK:Kwamura
                                                                               T:Teranishi
                                                                               D:Deguchi
                                                                               I:Imatani
                                                                               YK:Kawabata
                                                                               G:Goto