The Sunspot Observer - Average annual indices of solar activity NGDC

Solar activity in 2003

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	28	31	30	31	30	31	31	30	31	30	31	30.42	30.42
W	137.71	80.57	110.15	108.83	86.44	114.53	124.65	109.23	78.96	107.84	98.14	71.90	102.62	102.41
Wn	32.65	34.73	57.43	50.76	26.07	66.32	71.00	39.51	30.79	45.19	39.00	34.16	44.01	43.97
Ws	105.06	45.84	52.71	58.08	60.37	48.21	53.64	69.72	48.17	62.65	59.15	37.74	58.60	58.44
n	7.89	4.95	6.29	6.09	5.06	5.60	6.55	5.90	4.36	4.69	4.76	4.25	5.55	5.53
A	0.56	0.37	0.54	0.58	0.65	0.51	0.59	0.51	0.39	0.54	0.45	0.34	0.50	0.50
B	0.43	0.33	0.59	0.49	0.33	0.24	0.42	0.29	0.34	0.53	0.46	0.53	0.41	0.42
C	1.91	1.14	1.27	1.26	0.86	1.04	1.12	0.99	0.92	0.80	0.81	0.82	1.08	1.08
D	2.42	1.58	2.42	2.14	1.32	1.80	1.61	2.13	1.41	1.37	1.80	1.12	1.76	1.76
E	0.24	0.32	0.29	0.27	0.13	0.42	0.47	0.59	0.07	0.37	0.42	0.01	0.29	0.30
F	0.05	0.00	0.00	0.01	0.18	0.25	0.32	0.05	0.26	0.37	0.20	0.22	0.16	0.16
G	0.38	0.15	0.22	0.12	0.09	0.44	0.22	0.28	0.14	0.10	0.13	0.17	0.21	0.20
H	0.06	0.02	0.24	0.21	0.07	0.02	0.01	0.01	0.01	0.06	0.03	0.01	0.06	0.06
I	1.84	1.04	0.71	1.01	1.44	0.88	1.80	1.04	0.83	0.56	0.46	1.02	1.05	1.05
x	0.99	0.70	1.13	1.07	0.97	0.74	1.01	0.81	0.73	1.07	0.91	0.88	0.92	0.92
r	0.38	0.45	0.40	0.25	0.31	0.29	0.34	0.40	0.23	0.29	0.24	0.20	0.31	0.32
s	2.75	2.16	1.83	1.71	1.90	1.98	2.75	2.44	1.99	1.26	1.37	1.86	2.01	2.00
a	3.44	1.50	1.70	1.91	1.36	1.76	1.92	1.82	1.07	1.07	1.07	0.98	1.63	1.63
h	0.06	0.03	0.32	0.29	0.04	0.10	0.01	0.02	0.02	0.09	0.08	0.03	0.09	0.09
k	0.28	0.11	0.91	0.86	0.47	0.72	0.53	0.41	0.32	0.91	1.08	0.29	0.58	0.57
x	2.46	1.43	1.49	1.80	2.16	1.41	2.40	1.56	1.23	1.17	0.94	1.38	1.62	1.62
o	4.63	3.10	3.97	3.43	2.31	3.08	2.95	3.32	2.61	2.28	2.64	2.52	3.07	3.07
i	0.72	0.40	0.72	0.70	0.37	0.81	0.90	0.65	0.42	0.49	0.64	0.29	0.59	0.59
c	0.08	0.03	0.11	0.16	0.24	0.31	0.31	0.37	0.11	0.76	0.54	0.07	0.25	0.26
CV	110.84	69.74	117.91	109.93	74.79	105.96	102.87	101.75	69.06	94.81	102.93	61.39	93.65	93.50
CVn	25.24	31.34	72.12	59.11	20.61	63.46	58.20	35.97	26.13	39.84	49.89	33.65	42.99	42.96
CVs	85.60	38.40	45.79	50.82	54.18	42.51	44.67	65.77	42.92	54.97	53.04	27.74	50.67	50.53