The Sunspot Observer - Average annual indices of solar activity NGDC

Solar activity in 1983

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	25	25	31	30	31	31	30	31	30	31	29.66	29.50
W	123.24	76.62	84.09	104.73	122.17	124.81	107.84	92.33	63.56	70.03	42.26	48.88	88.37	88.38
Wn	43.37	17.02	8.45	18.80	28.00	41.99	30.84	19.74	16.54	37.00	8.43	19.05	24.53	24.10
Ws	79.86	59.61	75.64	85.93	94.17	82.82	77.00	72.59	47.02	33.03	33.83	29.83	63.84	64.28
n	7.33	4.70	4.93	5.98	6.34	5.79	6.14	5.44	3.92	4.12	2.71	2.81	5.01	5.02
A	1.01	0.75	0.75	0.69	0.82	0.68	0.73	1.22	0.95	0.86	0.36	0.50	0.79	0.78
B	0.61	0.68	0.66	0.98	0.51	0.66	1.08	1.12	0.62	0.60	0.73	0.64	0.74	0.74
C	1.82	0.86	1.00	1.43	1.33	1.34	1.69	0.83	0.61	0.73	0.65	0.77	1.09	1.09
D	1.55	0.84	1.31	1.81	1.70	1.53	0.87	0.34	0.81	0.92	0.47	0.60	1.05	1.06
E	0.07	0.03	0.05	0.05	0.35	0.38	0.22	0.20	0.20	0.06	0.00	0.00	0.14	0.13
F	0.01	0.01	0.00	0.02	0.08	0.31	0.07	0.23	0.00	0.06	0.00	0.00	0.06	0.07
G	0.31	0.34	0.18	0.34	0.58	0.19	0.47	0.27	0.08	0.40	0.06	0.20	0.29	0.28
H	0.29	0.18	0.10	0.07	0.22	0.05	0.22	0.06	0.04	0.06	0.04	0.01	0.11	0.11
I	1.66	1.01	0.87	0.58	0.75	0.66	0.79	1.16	0.62	0.44	0.39	0.10	0.75	0.75
x	1.62	1.43	1.42	1.68	1.33	1.34	1.81	2.34	1.57	1.46	1.10	1.14	1.52	1.52
r	0.32	0.43	0.54	0.74	0.39	0.42	0.30	0.31	0.30	0.24	0.31	0.24	0.38	0.38
s	2.76	1.50	1.40	1.56	1.88	1.70	1.76	1.59	0.97	0.95	0.58	0.72	1.45	1.45
a	1.56	0.58	0.80	1.05	1.34	1.08	1.27	0.72	0.71	0.73	0.68	0.67	0.93	0.93
h	0.54	0.23	0.28	0.28	0.48	0.33	0.37	0.24	0.17	0.27	0.03	0.03	0.27	0.27
k	0.53	0.53	0.49	0.67	0.92	0.92	0.63	0.24	0.21	0.47	0.02	0.01	0.46	0.47
x	2.96	1.94	1.72	1.35	1.80	1.39	1.73	2.45	1.61	1.36	0.79	0.61	1.65	1.64
o	3.95	2.40	2.79	4.18	3.60	3.30	3.80	2.43	1.98	2.49	1.79	2.13	2.89	2.90
i	0.42	0.28	0.37	0.43	0.87	1.03	0.60	0.56	0.33	0.25	0.13	0.07	0.45	0.44
c	0.01	0.09	0.05	0.02	0.07	0.07	0.01	0.00	0.00	0.03	0.00	0.00	0.03	0.03
CV	109.32	67.60	73.25	92.29	119.70	106.23	90.98	58.39	46.79	63.19	22.87	27.35	73.01	73.16
CVn	45.70	13.26	5.14	10.33	27.74	40.25	22.36	11.58	8.89	40.06	5.31	9.36	20.49	20.00
CVs	63.61	54.34	68.10	81.96	91.96	65.97	68.62	46.81	37.91	23.13	17.57	17.99	52.52	53.16