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

Statistics of sunspot activity

September, 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						124						133	109	133	114		91	124	156	160	196		206	203	181	151					148.64	100
Wn						102						85	70	91	75		79	98	110	113	140		136	139	112	88					102.71	69.10
Ws						22						48	39	42	39		12	26	46	47	56		70	64	69	63					45.93	30.90
n						8						7	6	8	7		6	8	10	10	12		12	11	10	8					8.79	100
A						2						0	0	0	1		0	0	0	0	0		1	2	2	2					0.71	8.13
B						2						0	0	3	1		2	1	0	0	2		1	1	1	0					1.00	11.38
C						1						0	2	0	2		1	4	5	5	4		1	0	1	0					1.86	21.14
D						2						2	0	1	1		2	2	4	4	4		5	3	3	3					2.57	29.27
E						0						3	3	1	0		0	0	0	0	0		0	1	0	0					0.57	6.50
F						0						0	0	0	0		0	0	0	0	0		0	0	0	0					0.00	0.00
G						0						0	0	2	1		0	0	0	0	0		0	0	1	1					0.36	4.07
H						0						0	0	1	1		0	0	0	1	1		0	0	0	1					0.36	4.07
I						1						2	1	0	0		1	1	1	0	1		4	4	2	1					1.36	15.45
x						4						0	0	3	2		2	1	0	0	2		2	3	3	2					1.71	19.51
r						0						1	2	0	0		1	0	0	1	1		2	2	1	0					0.79	8.94
s						2						2	1	1	2		1	1	3	3	7		5	2	2	3					2.50	28.46
a						2						3	2	3	3		2	5	6	5	1		2	2	2	2					2.86	32.52
h						0						0	0	0	0		0	0	0	0	0		0	0	0	1					0.07	0.81
k						0						1	1	1	0		0	1	1	1	1		1	2	2	0					0.86	9.76
x						3						2	1	1	2		1	1	1	1	2		5	6	4	4					2.43	27.64
o						4						1	1	6	4		4	6	6	6	5		2	1	3	1					3.57	40.65
i						1						3	4	1	1		1	1	2	2	4		4	3	3	3					2.36	26.83
c						0						1	0	0	0		0	0	1	1	1		1	1	0	0					0.43	4.88
CV						68						160	114	122	74		63	113	177	166	194		189	175	158	144					136.93	100
CVn						57						118	103	99	60		59	92	134	128	143		128	133	122	100					105.43	77.00
CVs						11						42	11	23	14		4	21	43	38	51		61	42	36	44					31.50	23.00
gr						5						6	5	7	6		6	8	9	9	10		9	7	8	7					7.29	82.93
grfp						16						28	18	16	13		12	16	27	21	18		32	31	27	25					21.43	37.04
grf						25						34	30	36	30		19	28	28	38	56		51	58	52	45					36.43	62.96
efp						1						1	1	1	1		0	0	1	1	2		2	3	2	1					1.21	13.82
ef						2						0	0	0	0		0	0	0	0	0		1	1	0	0					0.29	3.25
Cond						3						3	2	1	2		3	3	2	3	3		3	2	1	2					2.36	52.86