The Sunspot Observer - Average annual indices of solar activity - Solar activity in 2017 - September, 2017

Statistics of sunspot activity

September, 2017

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	55													11	13	13		12	22											27.71	100
Wn	43	31													11	13	13		12	11											19.14	69.07
Ws	25	24													0	0	0		0	11											8.57	30.93
n	4	3													1	1	1		1	2											1.86	100
A	0	0													0	0	0		0	0											0.00	0.00
B	0	0													0	0	0		0	0											0.00	0.00
C	1	1													0	0	0		0	0											0.29	15.38
D	1	0													0	0	0		0	0											0.14	7.69
E	0	0													0	0	0		0	0											0.00	0.00
F	1	1													0	0	0		0	0											0.29	15.38
G	0	0													0	0	0		0	0											0.00	0.00
H	0	0													0	0	0		0	0											0.00	0.00
I	1	1													1	1	1		1	2											1.14	61.54
x	0	0													0	0	0		0	0											0.00	0.00
r	1	1													0	0	0		0	0											0.29	15.38
s	1	1													1	1	1		1	2											1.14	61.54
a	1	0													0	0	0		0	0											0.14	7.69
h	1	1													0	0	0		0	0											0.29	15.38
k	0	0													0	0	0		0	0											0.00	0.00
x	1	1													1	1	1		1	2											1.14	61.54
o	2	1													0	0	0		0	0											0.43	23.08
i	1	0													0	0	0		0	0											0.14	7.69
c	0	1													0	0	0		0	0											0.14	7.69
CV	88	75													10	10	10		10	20											31.86	100
CVn	73	60													10	10	10		10	10											26.14	82.06
CVs	15	15													0	0	0		0	10											5.72	17.94
gr	3	2													0	1	1		1	0											1.14	61.54
grfp	15	13													0	2	2		1	0											4.71	55.93
grf	12	11													0	1	1		1	0											3.71	44.07
efp	1	1													1	0	0		0	2											0.71	38.46
ef	0	0													0	0	0		0	0											0.00	0.00
Cond	2	3													3	2	4		3	3											2.86	42.86