The Sunspot Observer - Average annual indices of solar activity - Solar activity in 2015 - April, 2015

Statistics of sunspot activity

April, 2015

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	55	40	41	77	91		58						89	118														43	39		65.10	100
Wn	15	17	29	46	49		21						44	75														14	16		32.60	50.08
Ws	40	23	12	31	42		37						45	43														29	23		32.50	49.92
n	4	3	3	5	5		3						5	7														3	3		4.10	100
A	1	0	1	1	0		0						0	0														0	0		0.30	7.32
B	1	1	1	1	2		1						2	2														1	1		1.30	31.71
C	2	0	0	3	0		0						1	1														1	0		0.80	19.51
D	0	1	1	0	2		2						1	2														1	0		1.00	24.39
E	0	0	0	0	0		0						1	1														0	0		0.20	4.88
F	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		0.00	0.00
H	0	1	0	0	0		0						0	0														0	0		0.10	2.44
I	0	0	0	0	1		0						0	1														0	2		0.40	9.76
x	2	1	2	2	2		1						2	2														1	1		1.60	39.02
r	1	1	0	1	0		0						1	1														0	1		0.60	14.63
s	0	0	0	0	1		0						0	1														1	1		0.40	9.76
a	0	0	1	2	2		2						1	1														1	0		1.00	24.39
h	1	1	0	0	0		0						0	0														0	0		0.20	4.88
k	0	0	0	0	0		0						1	2														0	0		0.30	7.32
x	1	1	1	1	1		0						0	1														0	2		0.80	19.51
o	3	1	1	4	3		1						3	4														3	0		2.30	56.10
i	0	1	1	0	1		1						1	1														0	1		0.70	17.07
c	0	0	0	0	0		1						1	1														0	0		0.30	7.32
CV	49	58	25	24	61		55						80	137														32	17		53.80	100
CVn	2	16	23	17	37		22						67	114														2	3		30.30	56.32
CVs	47	42	2	7	24		33						13	23														30	14		23.50	43.68
gr	4	2	2	4	5		3						5	7														3	2		3.70	90.24
grfp	2	2	5	7	14		12						17	20														4	1		8.40	35.44
grf	13	7	5	19	27		16						22	28														9	7		15.30	64.56
efp	0	1	0	0	0		0						0	0														0	1		0.20	4.88
ef	0	0	1	1	0		0						0	0														0	0		0.20	4.88
Cond	2	3	3	3	4		3						2	3														2	1		2.60	48.00