The Sunspot Observer - Average annual indices of solar activity NGDC

Solar activity in 2012

Visual indices of solar activity by National Geophysical Data Center

													Average by
month	I	II	III	IV	V	VI	VII	VIII	IX	X	XI	XII	days	months
N	31	29	31	30	31	30	31	31	30	31	30	31	30.42	30.42
W	83.69	18.33	73.37	79.25	90.08	89.39	90.06	82.86	79.47	68.93	84.43	55.51	74.84	74.61
Wn	62.74	18.33	39.60	39.94	51.18	34.63	20.98	41.09	35.09	32.76	51.99	40.46	39.17	39.07
Ws	20.95	0.00	33.77	39.31	38.90	54.77	69.08	41.77	44.37	36.17	32.44	15.05	35.67	35.55
n	5.24	1.67	4.76	4.41	5.52	5.49	4.95	5.86	5.23	4.64	5.13	3.62	4.73	4.71
A	0.66	0.33	0.70	0.68	0.74	0.87	0.41	0.75	0.69	0.40	0.49	0.56	0.61	0.61
B	0.61	0.00	0.57	0.52	0.47	0.61	0.35	0.59	0.57	0.38	0.56	0.32	0.47	0.46
C	1.09	0.00	1.16	0.83	1.02	1.10	1.32	1.38	0.96	0.77	1.05	0.60	0.95	0.94
D	1.06	0.00	1.22	1.51	1.26	1.73	0.82	1.48	1.29	1.30	1.21	1.04	1.16	1.16
E	0.26	0.00	0.17	0.19	0.05	0.32	0.35	0.04	0.32	0.06	0.41	0.23	0.20	0.20
F	0.02	0.00	0.01	0.07	0.27	0.00	0.34	0.00	0.01	0.00	0.04	0.00	0.07	0.06
G	0.26	0.00	0.21	0.16	0.31	0.16	0.17	0.17	0.35	0.15	0.24	0.13	0.20	0.19
H	0.24	0.33	0.04	0.06	0.11	0.08	0.14	0.17	0.21	0.24	0.05	0.07	0.14	0.14
I	1.04	1.00	0.68	0.41	1.28	0.62	1.05	1.27	0.83	1.34	1.09	0.67	0.95	0.94
x	1.27	0.33	1.27	1.21	1.22	1.48	0.76	1.34	1.26	0.77	1.06	0.88	1.07	1.07
r	0.48	0.00	0.57	0.26	0.37	0.33	0.33	0.59	0.29	0.35	0.29	0.23	0.34	0.34
s	1.63	1.00	2.02	1.70	2.24	1.83	2.12	2.18	2.06	1.83	2.14	1.54	1.87	1.86
a	0.70	0.00	0.44	0.69	0.59	1.26	0.57	0.81	1.09	0.81	1.20	0.63	0.74	0.73
h	0.52	0.33	0.14	0.25	0.43	0.14	0.42	0.60	0.24	0.41	0.13	0.19	0.32	0.32
k	0.64	0.00	0.32	0.30	0.68	0.46	0.76	0.33	0.28	0.48	0.31	0.15	0.40	0.39
x	1.94	1.67	1.42	1.14	2.13	1.57	1.60	2.20	1.73	1.97	1.63	1.30	1.69	1.69
o	2.72	0.00	2.72	2.36	2.70	3.16	2.51	3.44	3.04	2.30	2.79	1.78	2.47	2.46
i	0.39	0.00	0.33	0.67	0.37	0.49	0.28	0.21	0.39	0.18	0.45	0.41	0.36	0.35
c	0.19	0.00	0.30	0.24	0.32	0.27	0.56	0.01	0.06	0.18	0.26	0.13	0.21	0.21
CV	90.67	23.67	70.23	75.15	100.16	86.27	99.20	90.41	80.06	80.68	78.36	56.65	77.90	77.63
CVn	74.00	23.67	39.70	33.53	61.83	25.02	19.24	42.98	33.17	35.01	50.73	39.65	40.01	39.88
CVs	16.67	0.00	30.53	41.62	38.33	61.25	79.96	47.43	46.89	45.67	27.63	17.01	37.89	37.75