The Sunspot Observer - Average annual indices of solar activity - Solar activity in 2001 - December, 2001

Statistics of sunspot activity

December, 2001

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	31	Average	%
W	214	169		156		157	150	180	128			115								106	146	201				175						158.08	100
Wn	90	67		63		63	78	98	67			51								68	86	95				87						76.08	48.13
Ws	124	102		93		94	72	82	61			64								38	60	106				88						82.00	51.87
n	12	11		9		10	9	11	8			7								6	8	11				9						9.25	100
A	1	1		0		1	0	0	0			0								0	0	1				0						0.33	3.60
B	0	1		0		0	0	0	0			0								0	0	0				0						0.08	0.90
C	0	0		2		1	0	1	0			0								1	1	2				1						0.75	8.11
D	6	1		4		3	5	6	3			3								2	4	5				2						3.67	39.64
E	0	1		0		0	0	1	1			0								0	1	1				3						0.67	7.21
F	0	0		0		0	0	0	0			0								0	0	0				0						0.00	0.00
G	1	1		2		1	1	2	1			1								0	0	0				0						0.83	9.01
H	3	4		1		4	3	1	2			1								1	1	2				3						2.17	23.42
I	1	2		0		0	0	0	1			2								2	1	0				0						0.75	8.11
x	1	2		0		1	0	0	0			0								0	0	1				0						0.42	4.50
r	3	1		0		2	1	1	1			1								0	1	0				0						0.92	9.91
s	4	3		2		3	4	5	3			3								1	1	2				3						2.83	30.63
a	2	3		5		2	2	3	2			1								4	5	7				4						3.33	36.04
h	0	0		1		0	0	0	0			1								0	0	0				0						0.17	1.80
k	2	2		1		2	2	2	2			1								1	1	1				2						1.58	17.12
x	5	7		1		5	3	1	3			3								3	2	3				3						3.25	35.14
o	3	2		5		3	4	7	3			3								2	3	5				2						3.50	37.84
i	3	1		2		1	2	3	2			1								1	3	2				4						2.08	22.52
c	1	1		1		1	0	0	0			0								0	0	1				0						0.42	4.50
CV	235	173		217		180	202	267	175			164								97	148	197				196						187.58	100
CVn	111	92		93		59	96	142	72			58								72	92	95				123						92.08	49.09
CVs	124	81		124		121	106	125	103			106								25	56	102				73						95.50	50.91
gr	10	8		8		8	7	10	5			5								5	7	10				7						7.50	81.08
grfp	60	35		48		35	39	44	32			32								29	52	63				56						43.75	68.54
grf	32	21		17		20	19	25	13			11								16	13	27				27						20.08	31.46
efp	1	3		1		2	2	1	3			2								1	1	0				2						1.58	17.12
ef	1	0		0		0	0	0	0			0								0	0	1				0						0.17	1.80
Cond	2	2		3		4	4	1	3			2								3	2	1				2						2.42	51.67