The Sunspot Observer - Average annual indices of solar activity - Solar activity in 1990 - August, 1990

Statistics of sunspot activity

August, 1990

Visual indices of solar activity by author's observations

Date01020304050607080910111213141516171819202122232425262728293031Average%
W                  324363318333  297      327.00100
Wn                  1681498492  77      114.0034.86
Ws                  156214234241  220      213.0065.14
n                  16181514  12      15.00100
A                  0113  2      1.409.33
B                  7520  2      3.2021.33
C                  6353  0      3.4022.67
D                  2313  1      2.0013.33
E                  1321  1      1.6010.67
F                  0111  1      0.805.33
G                  0111  2      1.006.67
H                  0121  3      1.409.33
I                  0001  0      0.201.33
x                  7633  4      4.6030.67
r                  0211  0      0.805.33
s                  4364  4      4.2028.00
a                  1300  1      1.006.67
h                  3222  0      1.8012.00
k                  1234  3      2.6017.33
x                  0235  5      3.0020.00
o                  81186  4      7.4049.33
i                  7431  3      3.6024.00
c                  1112  0      1.006.67
CV                  280340342373  225      312.00100
CVn                  1351208079  41      91.0029.17
CVs                  145220262294  184      221.0070.83