The Sunspot Observer - Average annual indices of solar activity - Solar activity in 2025 - April, 2025

Statistics of sunspot activity

April, 2025

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	153	144		146				147			145	121			72	84		157			165		204	194		192			125		146.36	100
Wn	58	55		62				40			105	94			48	44		62			56		42	54		68			55		60.21	41.14
Ws	95	89		84				107			40	27			24	40		95			109		162	140		124			70		86.14	58.86
n	7	7		7				8			9	6			5	4		9			10		12	13		13			9		8.50	100
A	0	1		0				2			2	0			1	0		1			1		0	2		2			3		1.07	12.61
B	1	1		2				0			2	1			1	1		1			2		4	2		1			0		1.36	15.97
C	3	1		0				1			1	0			0	1		1			2		2	1		4			1		1.29	15.13
D	1	2		3				1			3	3			2	1		4			3		4	4		2			2		2.50	29.41
E	2	1		0				0			0	1			0	0		0			1		1	1		0			1		0.57	6.72
F	0	1		1				1			0	0			0	0		0			0		0	0		0			0		0.21	2.52
G	0	0		0				1			0	0			0	0		0			0		0	0		0			0		0.07	0.84
H	0	0		1				1			0	0			0	0		0			0		0	0		0			1		0.21	2.52
I	0	0		0				1			1	1			1	1		2			1		1	3		4			1		1.21	14.29
x	1	2		2				2			4	1			2	1		2			3		4	4		3			3		2.43	28.57
r	1	0		0				1			0	0			0	0		1			3		1	1		3			1		0.86	10.08
s	0	1		1				3			3	3			1	1		2			2		4	5		6			3		2.50	29.41
a	3	2		2				2			1	1			2	1		2			0		3	3		0			1		1.64	19.33
h	1	1		1				0			0	0			0	0		0			0		0	0		0			1		0.29	3.36
k	1	1		1				0			1	1			0	1		2			2		0	0		1			0		0.79	9.24
x	0	1		1				4			3	1			2	1		3			2		1	5		6			5		2.50	29.41
o	5	3		5				3			4	4			2	1		2			6		7	5		4			0		3.64	42.86
i	1	2		0				1			1	0			1	2		3			2		4	3		3			4		1.93	22.69
c	1	1		1				0			1	1			0	0		1			0		0	0		0			0		0.43	5.04
CV	153	171		164				96			129	137			54	73		170			156		154	152		145			132		134.71	100
CVn	72	89		86				16			86	102			25	24		57			56		34	52		64			70		59.50	44.17
CVs	81	82		78				80			43	35			29	49		113			100		120	100		81			62		75.21	55.83
gr	7	6		6				5			8	5			4	3		6			10		11	9		8			4		6.57	77.31
grfp	40	42		27				37			25	32			8	19		25			27		28	22		17			12		25.79	43.39
grf	43	31		48				27			29	28			13	24		39			38		55	38		40			18		33.64	56.61
efp	0	0		1				2			1	1			1	1		2			0		1	3		3			2		1.29	15.13
ef	0	1		0				1			0	0			0	0		1			0		0	1		2			3		0.64	7.56
Cond	3	4		4				3			4	3			4	3		4			3		2	3		4			3		3.36	32.86