The Sunspot Observer - Average annual indices of solar activity - Solar activity in 2018 - December, 2018

Statistics of sunspot activity

December, 2018

Visual indices of solar activity by author's observations

Date01020304050607080910111213141516171819202122232425262728293031Average%
W     20                       0 10.00100
Wn     0                       0 0.000.00
Ws     20                       0 10.00100.00
n     1                       0 0.50100
A     0                       0 0.000.00
B     0                       0 0.000.00
C     0                       0 0.000.00
D     1                       0 0.50100.00
E     0                       0 0.000.00
F     0                       0 0.000.00
G     0                       0 0.000.00
H     0                       0 0.000.00
I     0                       0 0.000.00
x     0                       0 0.000.00
r     1                       0 0.50100.00
s     0                       0 0.000.00
a     0                       0 0.000.00
h     0                       0 0.000.00
k     0                       0 0.000.00
x     0                       0 0.000.00
o     1                       0 0.50100.00
i     0                       0 0.000.00
c     0                       0 0.000.00
CV     13                       0 6.50100
CVn     0                       0 0.000.00
CVs     13                       0 6.50100.00
gr     1                       0 0.50100.00
grfp     4                       0 2.0040.00
grf     6                       0 3.0060.00
efp     0                       0 0.000.00
ef     0                       0 0.000.00
Cond     3                       4 3.5030.00