The Sunspot Observer - Average annual indices of solar activity - Solar activity in 1991 - December, 1991

Statistics of sunspot activity

December, 1991

Visual indices of solar activity by author's observations

Date	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	Average	%
W																								155								155.00	100
Wn																								0								0.00	0.00
Ws																								155								155.00	100.00
n																								5								5.00	100
A																								0								0.00	0.00
B																								0								0.00	0.00
C																								1								1.00	20.00
D																								2								2.00	40.00
E																								0								0.00	0.00
F																								1								1.00	20.00
G																								0								0.00	0.00
H																								1								1.00	20.00
I																								0								0.00	0.00
x																								0								0.00	0.00
r																								0								0.00	0.00
s																								1								1.00	20.00
a																								2								2.00	40.00
h																								0								0.00	0.00
k																								2								2.00	40.00
x																								1								1.00	20.00
o																								1								1.00	20.00
i																								1								1.00	20.00
c																								2								2.00	40.00
CV																								150								150.00	100
CVn																								0								0.00	0.00
CVs																								150								150.00	100.00

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