The Sunspot Observer - Average annual indices of solar activity - Solar activity in 1997 - September, 1997

Statistics of sunspot activity

September, 1997

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	Average	%
W				36	35	50	65	92			80				87	81	44	30	16	14		47		41	38		22	18		24	45.56	100
Wn				17	11	31	28	37			24				60	65	32	18	16	14		12		0	0		0	0		0	20.28	44.51
Ws				19	24	19	37	55			56				27	16	12	12	0	0		35		41	38		22	18		24	25.28	55.49
n				2	2	3	4	4			3				3	3	3	2	1	1		3		2	2		1	1		2	2.33	100
A				0	0	0	0	0			0				0	0	0	0	0	0		0		0	0		0	0		0	0.00	0.00
B				0	0	0	0	0			0				0	0	0	0	0	0		0		0	0		0	0		0	0.00	0.00
C				0	0	0	0	0			0				0	0	0	0	1	1		0		0	0		0	0		1	0.17	7.14
D				1	1	2	2	3			1				0	1	0	1	0	0		1		0	0		0	1		0	0.78	33.33
E				1	0	0	0	1			1				2	2	1	0	0	0		0		1	1		0	0		0	0.56	23.81
F				0	0	0	0	0			1				1	0	0	0	0	0		0		0	0		0	0		0	0.11	4.76
G				0	1	0	1	0			0				0	0	1	0	0	0		0		0	0		1	0		0	0.22	9.52
H				0	0	0	0	0			0				0	0	1	1	0	0		0		0	0		0	0		0	0.11	4.76
I				0	0	1	1	0			0				0	0	0	0	0	0		2		1	1		0	0		1	0.39	16.67
x				0	0	0	0	0			0				0	0	0	0	0	0		0		0	0		0	0		0	0.00	0.00
r				0	0	1	1	0			0				0	0	0	0	0	0		0		0	0		0	0		0	0.11	4.76
s				1	1	0	0	0			0				0	0	0	0	0	1		2		1	1		0	0		1	0.44	19.05
a				1	1	1	3	4			1				2	2	2	2	1	0		1		1	1		1	1		1	1.44	61.90
h				0	0	0	0	0			0				0	0	0	0	0	0		0		0	0		0	0		0	0.00	0.00
k				0	0	1	0	0			2				1	1	1	0	0	0		0		0	0		0	0		0	0.33	14.29
x				0	0	1	1	0			0				0	0	1	1	0	0		2		1	1		0	0		1	0.50	21.43
o				0	1	0	2	1			0				0	0	1	0	1	1		0		0	0		1	1		1	0.56	23.81
i				2	1	2	1	2			3				2	1	1	1	0	0		0		0	0		0	0		0	0.89	38.10
c				0	0	0	0	1			0				1	2	0	0	0	0		1		1	1		0	0		0	0.39	16.67
CV				51	48	72	65	95			117				103	110	80	29	8	11		51		42	42		20	19		18	54.50	100
CVn				29	26	26	23	41			23				55	55	43	22	8	11		10		0	0		0	0		0	20.67	37.92
CVs				22	22	46	42	54			94				48	55	37	7	0	0		41		42	42		20	19		18	33.83	62.08
gr				2	1	3	4	4			3				3	3	3	2	1	1		2		1	1		1	1		1	2.06	88.10
grfp				10	11	13	21	42			30				35	33	12	9	2	2		13		18	14		10	6		2	15.72	71.65
grf				6	3	7	4	10			20				22	18	2	1	4	2		3		2	3		2	2		1	6.22	28.35
efp				0	1	0	0	0			0				0	0	0	0	0	0		1		1	1		0	0		1	0.28	11.90
ef				0	0	0	0	0			0				0	0	0	0	0	0		0		0	0		0	0		0	0.00	0.00
Cond				2	3	3	3	2			5				2-3	1	2	2	1	2		3		5	5		3	3		3	2.81	43.89