The Sunspot Observer - Average annual indices of solar activity - Solar activity in 1999 - December, 1999

Statistics of sunspot activity

December, 1999

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	121					76		96							103								119			58						95.50	100
Wn	49					64		71							26								74			47						55.17	57.77
Ws	72					12		25							77								45			11						40.33	42.23
n	5					4		6							6								4			3						4.67	100
A	0					0		0							0								0			0						0.00	0.00
B	0					0		0							0								0			0						0.00	0.00
C	2					2		2							0								1			0						1.17	25.00
D	1					1		1							3								0			0						1.00	21.43
E	1					1		0							0								1			1						0.67	14.29
F	0					0		0							0								1			1						0.33	7.14
G	0					0		1							1								0			0						0.33	7.14
H	0					0		0							0								1			1						0.33	7.14
I	1					0		2							2								0			0						0.83	17.86
x	0					0		0							0								0			0						0.00	0.00
r	0					1		1							0								1			0						0.50	10.71
s	0					0		1							3								0			1						0.83	17.86
a	5					2		3							2								1			0						2.17	46.43
h	0					0		0							0								1			0						0.17	3.57
k	0					1		1							1								1			2						1.00	21.43
x	1					0		2							2								1			1						1.17	25.00
o	3					3		4							3								1			0						2.33	50.00
i	1					1		0							0								1			2						0.83	17.86
c	0					0		0							1								1			0						0.33	7.14
CV	65					76		94							140								125			105						100.83	100
CVn	31					68		76							31								62			95						60.50	60.00
CVs	34					8		18							109								63			10						40.33	40.00
gr	5					4		5							5								3			2						4.00	85.71
grfp	49					26		19							28								53			20						32.50	67.47
grf	22					10		16							14								25			7						15.67	32.53
efp	0					0		1							1								1			1						0.67	14.29
ef	0					0		0							0								0			0						0.00	0.00
Cond	2					2		3							3-2								2			2						2.25	55.00