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

Statistics of sunspot activity

July, 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	334			387			298					220	278		257	215		146	236	252	374	453			459			377	395	364	414	321.12	100
Wn	215			289			183					70	80		31	16		27	45	72	159	226			283			242	255	264	249	159.18	49.57
Ws	119			98			115					150	198		226	199		119	191	180	215	227			176			135	140	100	165	161.94	50.43
n	14			17			15					6	7		7	6		7	10	10	13	12			14			13	12	12	10	10.88	100
A	2			0			2					0	1		0	0		0	1	1	1	0			1			3	1	0	0	0.76	7.03
B	4			3			1					0	1		1	1		0	0	0	2	1			2			0	1	0	1	1.06	9.73
C	1			2			6					0	1		0	0		1	0	0	2	3			1			3	3	0	2	1.47	13.51
D	1			4			1					2	1		3	3		2	3	3	2	3			2			3	4	8	3	2.82	25.95
E	3			1			2					0	1		0	0		0	1	0	3	2			2			1	2	2	0	1.18	10.81
F	0			1			0					1	0		0	0		0	0	2	0	1			1			0	0	0	1	0.41	3.78
G	0			1			0					0	1		1	1		1	0	0	0	0			1			0	0	0	1	0.41	3.78
H	2			5			1					2	1		2	0		2	2	2	1	1			2			1	1	1	2	1.65	15.14
I	1			0			2					1	0		0	1		1	3	2	2	1			2			2	0	1	0	1.12	10.27
x	6			3			3					0	2		1	1		0	1	1	3	1			3			3	2	0	1	1.82	16.76
r	0			0			1					1	0		0	0		1	2	0	1	2			3			1	1	0	0	0.76	7.03
s	4			7			3					2	1		2	1		4	2	3	4	3			6			4	3	5	4	3.41	31.35
a	1			5			6					1	0		2	2		1	4	4	4	3			0			3	3	5	4	2.82	25.95
h	0			1			0					0	0		2	1		1	0	0	0	0			0			0	0	0	0	0.29	2.70
k	3			1			2					2	4		0	1		0	1	2	1	3			2			2	3	2	1	1.76	16.22
x	5			5			5					3	2		2	1		3	6	5	4	2			5			6	2	2	2	3.53	32.43
o	3			7			6					0	2		3	2		2	0	1	4	6			3			5	6	4	5	3.47	31.89
i	6			5			4					3	2		1	3		2	4	4	4	3			4			0	2	4	1	3.06	28.11
c	0			0			0					0	1		1	0		0	0	0	1	1			2			2	2	2	2	0.82	7.57
CV	216			302			202					149	199		174	152		135	152	203	195	260			249			209	258	314	194	209.59	100
CVn	145			259			119					65	95		20	10		20	50	68	103	125			146			145	158	217	116	109.47	52.23
CVs	71			43			83					84	104		154	142		115	102	135	92	135			103			64	100	97	78	100.12	47.77