The Sunspot Observer - Average annual indices of solar activity - Solar activity in 2021 - December, 2021

Statistics of sunspot activity

December, 2021

Visual indices of solar activity by author's observations

Date01020304050607080910111213141516171819202122232425262728293031Average%
W      14 000133742         153142      44.56100
Wn      0 0000120         4637      10.5623.69
Ws      14 000132542         107105      34.0076.31
n      1 000133         99      2.89100
A      0 000000         10      0.113.85
B      1 000020         01      0.4415.38
C      0 000112         22      0.8930.77
D      0 000000         30      0.3311.54
E      0 000000         13      0.4415.38
F      0 000000         00      0.000.00
G      0 000000         00      0.000.00
H      0 000000         00      0.000.00
I      0 000001         23      0.6723.08
x      1 000020         11      0.5619.23
r      0 000111         34      1.1138.46
s      0 000001         11      0.3311.54
a      0 000001         31      0.5619.23
h      0 000000         02      0.227.69
k      0 000000         10      0.113.85
x      0 000001         33      0.7826.92
o      1 000131         33      1.3346.15
i      0 000001         33      0.7826.92
c      0 000000         00      0.000.00
CV      2 0005924         133159      36.89100
CVn      0 000020         2825      6.1116.57
CVs      2 0005724         105134      30.7883.43
gr      1 000132         76      2.2276.92
grfp      0 000123         3325      7.1147.41
grf      4 000258         2824      7.8952.59
efp      0 000001         13      0.5619.23
ef      0 000000         10      0.113.85
Cond      3 332123         43      2.6746.67