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

Statistics of sunspot activity

March, 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																246																246.00	100
Wn																28																28.00	11.38
Ws																218																218.00	88.62
n																10																10.00	100
A																2																2.00	20.00
B																0																0.00	0.00
C																2																2.00	20.00
D																1																1.00	10.00
E																0																0.00	0.00
F																2																2.00	20.00
G																0																0.00	0.00
H																2																2.00	20.00
I																1																1.00	10.00
x																2																2.00	20.00
r																1																1.00	10.00
s																3																3.00	30.00
a																3																3.00	30.00
h																0																0.00	0.00
k																1																1.00	10.00
x																5																5.00	50.00
o																3																3.00	30.00
i																1																1.00	10.00
c																1																1.00	10.00
CV																145																145.00	100
CVn																12																12.00	8.28
CVs																133																133.00	91.72