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

Statistics of sunspot activity

October, 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		301		354	443	255							215																			313.60	100
Wn		68		106	133	80							89																			95.20	30.36
Ws		233		248	310	175							126																			218.40	69.64
n		6		8	9	7							9																			7.80	100
A		1		1	1	0							2																			1.00	12.82
B		0		0	0	2							0																			0.40	5.13
C		0		2	2	1							1																			1.20	15.38
D		1		2	2	1							1																			1.40	17.95
E		0		0	1	1							3																			1.00	12.82
F		2		2	1	1							0																			1.20	15.38
G		1		1	1	1							1																			1.00	12.82
H		0		0	0	0							0																			0.00	0.00
I		1		0	1	0							1																			0.60	7.69
x		1		1	1	2							2																			1.40	17.95
r		1		0	0	0							0																			0.20	2.56
s		1		2	3	2							3																			2.20	28.21
a		0		2	2	1							3																			1.60	20.51
h		1		0	0	0							0																			0.20	2.56
k		2		3	3	2							1																			2.20	28.21
x		2		1	2	0							3																			1.60	20.51
o		2		3	3	5							2																			3.00	38.46
i		1		3	3	1							3																			2.20	28.21
c		1		1	1	1							1																			1.00	12.82
CV		185		219	226	164							176																			194.00	100
CVn		48		73	92	72							65																			70.00	36.08
CVs		137		146	134	92							111																			124.00	63.92