MONTHLY REPORT OF SUNSPOTS OBSERVATION April 2021


KWASAN OBSERVATORY  Yamasina Kyoto Japan
115mm Refractor
Seeing : 1-5
OBSERVER : M.Kamobe,M.Teranishi,A.D.Kawamura,E.Imatani,Y.Kawabata


Date Time(U.T.)  N-HemisphereS-HemisphereDisc Center Total        10g+f Seeing Observer
       h     m     g     f     g     f     g     f     g     f
  1    0     50    0     0     0     0     0     0     0     0      0     3/5    K
  2    1     45    0     0     0     0     0     0     0     0      0     2/5    T
  3
  4
  5    6     10    1     1     0     0     0     0     1     1     11     1/5    K
  6    0     55    1     1     0     0     0     0     1     1     11     3/5    K
  7    1     55    0     0     0     0     0     0     0     0      0     1/5   AK
  8    1     0     0     0     0     0     0     0     0     0      0     3/5    K
  9    2     45    0     0     0     0     0     0     0     0      0     1/5    T
 10    1     25    0     0     0     0     0     0     0     0      0     2/5   YK
 11    2     25    0     0     1     1     0     0     1     1     11     2/5   YK
 12    0     35    0     0     1     4     1     4     1     4     14     2/5    K
 13    2     10    0     0     1     5     1     5     1     5     15     1/5    K
 14    2     20    0     0     1     5     1     5     1     5     15     2/5    T
 15    1     0     0     0     1     7     1     7     1     7     17     1/5    K
 16
 17
 18    6     30    0     0     1     2     0     0     1     2     12     2/5   YK
 19    5     10    1     5     1     6     0     0     2     11    31     2/5    K
 20    0     45    2     10    2     6     1     5     4     16    56     2/5    K
 21    1     30    1     5     2     8     1     7     3     13    43     2/5    T
 22    2     20    1     1     2     7     1     6     3     8     38     4/5    K
 23    0     50    0     0     2     9     1     8     2     9     29     3/5    T
 24    5     0     0     0     3     7     2     5     3     7     37     2/5   YK
 25    4     55    0     0     3     10    3     10    3     10    40     3/5   YK
 26    3     25    0     0     3     13    3     13    3     13    43     1/5    K
 27    1     20    0     0     3     18    3     18    3     18    48     4/5    K
 28
 29
 30    3     10    0     0     3     3     0     0     3     3     33     3/5    T

            Sum    7     23    30   111    19    93                504         S:Sugiura
            (R)   3.9        17.1        11.8                     21.0         K: Kamobe
                                                                               H:Himoto
     Days    24                                                                A:Anan
                                                                               MH:Hagino
                                                                               AK:Kwamura
                                                                               T:Teranishi
                                                                               D:Deguchi
                                                                               I:Imatani
                                                                               YK:Kawabata