The Sunspot Observer - Average annual indices of solar activity - Solar activity in 1998 - February, 1998

Statistics of sunspot activity

February, 1998

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	Average	%
W	11		22			11	24	11				29		45		52		40	27	15	11					35	31		26.00	100
Wn	0		0			0	0	0				0		0		13		12	0	0	0					20	16		4.36	16.76
Ws	11		22			11	24	11				29		45		39		28	27	15	11					15	15		21.64	83.24
n	1		2			1	2	1				2		3		3		3	2	1	1					2	2		1.86	100
A	0		0			0	0	0				0		0		0		1	1	0	0					0	0		0.14	7.69
B	0		0			0	0	0				0		0		0		1	0	0	0					0	0		0.07	3.85
C	0		0			0	1	0				0		0		0		0	0	0	0					0	0		0.07	3.85
D	0		0			0	0	0				1		0		1		0	0	0	0					2	2		0.43	23.08
E	0		0			0	0	0				0		1		1		1	1	0	0					0	0		0.29	15.38
F	0		0			0	0	0				0		0		0		0	0	0	0					0	0		0.00	0.00
G	0		0			0	0	0				0		0		0		0	0	1	1					0	0		0.14	7.69
H	1		1			0	0	0				0		0		0		0	0	0	0					0	0		0.14	7.69
I	0		1			1	1	1				1		2		1		0	0	0	0					0	0		0.57	30.77
x	0		0			0	0	0				0		0		0		2	1	0	0					0	0		0.21	11.54
r	0		0			0	0	0				1		2		1		0	0	0	0					0	1		0.36	19.23
s	1		2			1	1	1				0		0		1		0	0	0	0					0	0		0.50	26.92
a	0		0			0	1	0				1		1		0		0	0	0	0					2	1		0.43	23.08
h	0		0			0	0	0				0		0		0		0	1	1	1					0	0		0.21	11.54
k	0		0			0	0	0				0		0		1		1	0	0	0					0	0		0.14	7.69
x	1		2			1	1	1				1		2		1		1	1	0	0					0	0		0.86	46.15
o	0		0			0	1	0				0		0		1		1	0	1	1					1	2		0.57	30.77
i	0		0			0	0	0				1		1		1		1	1	0	0					1	0		0.43	23.08
c	0		0			0	0	0				0		0		0		0	0	0	0					0	0		0.00	0.00
CV	10		20			10	18	10				26		31		76		50	54	50	50					41	32		34.14	100
CVn	0		0			0	0	0				0		0		25		2	0	0	0					22	19		4.86	14.23
CVs	10		20			10	18	10				26		31		51		48	54	50	50					19	13		29.29	85.77
gr	0		0			0	1	0				1		1		3		2	1	1	0					2	2		1.00	53.85
grfp	0		0			0	2	0				7		7		13		6	5	4	0					11	8		4.50	68.49
grf	0		0			0	1	0				1		6		9		3	1	1	0					4	3		2.07	31.51
efp	1		2			1	1	1				1		2		0		0	0	0	1					0	0		0.71	38.46
ef	0		0			0	0	0				0		0		0		1	1	0	0					0	0		0.14	7.69
Cond	2		3			2	3	2-3				2		4		2		3-2	2-4	2-3	4					3	2-3		2.71	45.80