The Sunspot Observer - Average annual indices of solar activity - Solar activity in 2004 - April, 2004

Statistics of sunspot activity

April, 2004

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		57		68	64	50	33	20	18	13		14			42	37	48	64	75		76		39	49	40	37	34	27	37	58	43.48	100
Wn		13		11	11	11	0	0	0	0		0			12	12	12	11	11		0		0	19	15	23	21	15	14	14	9.78	22.50
Ws		44		57	53	39	33	20	18	13		14			30	25	36	53	64		76		39	30	25	14	13	12	23	44	33.70	77.50
n		4		4	4	3	2	1	1	1		1			3	3	4	4	4		5		2	3	2	2	2	2	3	3	2.74	100
A		0		0	0	0	0	0	0	0		0			0	0	1	0	1		0		0	1	0	0	0	0	1	0	0.17	6.35
B		0		0	0	0	0	0	0	0		0			0	0	0	0	0		0		1	0	0	0	0	0	0	0	0.04	1.59
C		2		0	0	1	0	0	0	0		1			1	1	2	0	0		1		0	1	1	0	0	1	1	0	0.57	20.63
D		0		1	1	1	1	1	1	1		0			1	0	0	3	3		2		1	1	1	1	1	0	0	2	1.00	36.51
E		0		1	0	0	0	0	0	0		0			0	0	0	0	0		0		0	0	0	0	0	0	0	0	0.04	1.59
F		0		0	0	0	0	0	0	0		0			0	0	0	0	0		0		0	0	0	0	0	0	0	0	0.00	0.00
G		0		0	0	0	0	0	0	0		0			0	0	0	0	0		0		0	0	0	0	0	0	0	0	0.00	0.00
H		0		1	2	1	0	0	0	0		0			0	1	1	0	0		0		0	0	0	1	1	1	1	0	0.43	15.87
I		2		1	1	0	1	0	0	0		0			1	1	0	1	0		2		0	0	0	0	0	0	0	1	0.48	17.46
x		0		0	0	0	0	0	0	0		0			0	0	1	0	1		0		1	1	0	0	0	0	1	0	0.22	7.94
r		0		0	0	0	0	0	0	0		0			0	1	0	1	1		1		0	0	0	0	0	0	0	2	0.26	9.52
s		3		3	3	2	1	1	1	1		1			0	1	1	0	0		2		0	0	0	0	0	0	1	0	0.91	33.33
a		1		1	1	1	1	0	0	0		0			3	1	2	3	1		1		0	1	1	1	1	1	1	1	1.00	36.51
h		0		0	0	0	0	0	0	0		0			0	0	0	0	0		0		0	0	0	1	1	1	0	0	0.13	4.76
k		0		0	0	0	0	0	0	0		0			0	0	0	0	1		1		1	1	1	0	0	0	0	0	0.22	7.94
x		2		2	3	1	1	0	0	0		0			1	2	2	1	1		2		0	1	0	1	1	1	2	1	1.09	39.68
o		1		0	0	1	0	0	0	1		1			2	1	2	2	2		3		1	2	1	1	1	1	1	0	1.04	38.10
i		1		2	0	0	0	0	1	0		0			0	0	0	1	1		0		1	0	1	0	0	0	0	2	0.43	15.87
c		0		0	1	1	1	1	0	0		0			0	0	0	0	0		0		0	0	0	0	0	0	0	0	0.17	6.35
CV		40		71	61	52	41	34	28	25		11			34	22	27	64	79		90		46	58	60	59	59	48	19	39	46.39	100
CVn		11		10	10	10	0	0	0	0		0			8	10	7	4	1		0		0	19	22	19	19	8	8	7	7.52	16.21
CVs		29		61	51	42	41	34	28	25		11			26	12	20	60	78		90		46	39	38	40	40	40	11	32	38.87	83.79
gr		2		2	2	2	2	1	1	1		1			3	2	3	3	3		4		2	3	2	2	2	2	2	3	2.17	79.37
grfp		7		11	11	12	8	6	5	2		1			7	3	4	16	14		17		6	9	10	11	8	4	2	11	8.04	51.82
grf		8		15	11	7	5	4	3	1		3			5	3	3	7	20		8		13	10	10	6	6	3	4	17	7.48	48.18
efp		2		2	2	1	0	0	0	0		0			0	1	1	1	0		1		0	0	0	0	0	0	1	0	0.52	19.05
ef		0		0	0	0	0	0	0	0		0			0	0	0	0	1		0		0	0	0	0	0	0	0	0	0.04	1.59
Cond		2		3	2	3	1	2	1	1		1			1	1	2	1	2		3		1	1	2	1	2	1	2	1	1.61	67.83