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

Statistics of sunspot activity

November, 1990

Visual indices of solar activity by author's observations

Date010203040506070809101112131415161718192021222324252627282930Average%
W                                
Wn                                
Ws                                
n                                
A                                
B                                
C                                
D                                
E                                
F                                
G                                
H                                
I                                
x                                
r                                
s                                
a                                
h                                
k                                
x                                
o                                
i                                
c                                
CV                                
CVn                                
CVs