The Sunspot Observer - Average annual indices of solar activity - Solar activity in 2023 - April, 2023

Statistics of sunspot activity

April, 2023

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			68	60	64	58	49	44	48	95	117	171	199	206	212	207	182			110			117	91				118	94	120	115.71	100
Wn			23	24	24	14	12	0	0	40	55	70	66	54	50	80	55			48			30	18				57	48	61	39.48	34.12
Ws			45	36	40	44	37	44	48	55	62	101	133	152	162	127	127			62			87	73				61	46	59	76.24	65.88
n			5	4	4	4	3	2	2	5	6	10	12	10	11	11	9			6			8	7				7	5	7	6.57	100
A			1	0	2	1	1	0	1	1	1	3	2	3	4	2	1			2			3	4				1	0	2	1.67	25.36
B			1	2	1	1	0	0	0	1	1	2	4	0	0	2	1			0			2	0				1	0	1	0.95	14.49
C			0	0	0	1	0	0	0	0	0	1	1	0	1	3	4			2			1	1				1	2	2	0.95	14.49
D			1	1	1	0	0	0	0	1	2	0	1	3	0	0	0			1			1	1				2	1	1	0.81	12.32
E			0	0	0	1	1	1	1	1	1	1	1	2	4	1	1			0			0	0				1	1	1	0.90	13.77
F			0	0	0	0	1	1	0	0	0	1	1	0	0	2	2			1			1	0				0	0	0	0.48	7.25
G			0	0	0	0	0	0	0	0	0	0	0	0	0	0	0			0			0	1				0	0	0	0.05	0.72
H			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
I			2	1	0	0	0	0	0	1	1	2	2	2	2	1	0			0			0	0				1	1	0	0.76	11.59
x			2	2	3	2	1	0	1	2	2	5	6	3	4	4	2			2			5	4				2	0	3	2.62	39.86
r			1	1	0	0	0	0	0	0	0	0	0	0	1	2	3			2			0	1				1	2	1	0.71	10.87
s			1	0	0	2	1	1	0	1	0	2	3	2	2	0	1			1			1	1				1	1	1	1.05	15.94
a			1	1	1	0	1	1	1	2	4	3	3	3	2	2	1			0			1	0				2	1	1	1.48	22.46
h			0	0	0	0	0	0	0	0	0	0	0	0	0	1	0			1			0	0				1	1	1	0.24	3.62
k			0	0	0	0	0	0	0	0	0	0	0	2	2	2	2			0			1	1				0	0	0	0.48	7.25
x			3	1	2	1	1	0	1	2	2	5	4	5	6	3	1			2			3	4				2	1	2	2.43	36.96
o			1	2	1	2	1	1	0	2	2	1	4	2	1	3	2			2			4	3				3	2	3	2.00	30.43
i			1	1	1	1	1	1	1	0	1	3	4	2	4	5	6			2			1	0				2	2	1	1.90	28.99
c			0	0	0	0	0	0	0	1	1	1	0	1	0	0	0			0			0	0				0	0	1	0.24	3.62
CV			39	30	26	53	50	49	24	64	83	93	109	189	175	184	151			86			88	79				125	98	104	90.43	100
CVn			6	6	3	2	1	0	0	31	32	24	28	61	58	62	54			55			49	45				62	37	36	31.05	34.33
CVs			33	24	23	51	49	49	24	33	51	69	81	128	117	122	97			31			39	34				63	61	68	59.38	65.67
gr			4	3	3	2	3	2	2	3	4	9	8	8	7	10	8			5			6	4				5	4	5	5.00	76.09
grfp			5	6	7	8	10	9	9	28	14	18	22	30	29	21	27			11			9	9				18	18	19	15.57	32.15
grf			12	13	16	8	9	15	19	15	41	52	53	74	69	75	64			38			26	9				28	25	29	32.86	67.85
efp			1	1	0	1	0	0	0	1	1	0	2	1	2	1	0			0			0	0				1	1	0	0.62	9.42
ef			0	0	1	1	0	0	0	1	1	1	2	1	2	0	1			1			2	3				1	0	2	0.95	14.49
Cond			2	3	3	2	2	1	1	2	1	3	2	3	2	3	2			3			2	3				3	2	1	2.19	56.19