The Sunspot Observer - Average annual indices of solar activity NGDC

Solar activity in 1993

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	80.31	122.49	95.59	90.12	73.65	65.98	76.11	54.72	30.75	67.16	42.51	66.34	71.90	72.14
Wn	21.33	64.45	48.00	33.10	54.30	36.55	30.59	34.01	17.85	27.91	31.83	39.09	36.43	36.58
Ws	58.98	58.03	47.59	57.02	19.35	29.43	45.52	20.71	12.90	39.25	10.68	27.25	35.46	35.56
n	5.29	6.40	5.01	4.81	4.07	3.48	5.01	3.76	1.93	3.58	2.08	3.40	4.05	4.07
A	0.65	0.66	0.83	0.72	0.81	0.57	0.92	0.42	0.52	0.60	0.45	0.65	0.65	0.65
B	0.70	0.67	0.67	0.89	0.50	0.31	0.73	0.41	0.40	0.58	0.21	0.20	0.52	0.52
C	1.16	1.65	0.93	0.78	0.79	0.82	1.19	0.81	0.36	0.65	0.23	0.71	0.84	0.84
D	1.12	1.15	0.96	1.58	1.03	0.78	0.87	0.63	0.25	0.48	0.53	0.61	0.84	0.83
E	0.01	0.45	0.32	0.21	0.21	0.30	0.04	0.00	0.01	0.16	0.14	0.07	0.16	0.16
F	0.00	0.07	0.13	0.01	0.01	0.01	0.00	0.01	0.07	0.21	0.00	0.25	0.06	0.06
G	0.11	0.50	0.43	0.29	0.11	0.06	0.01	0.27	0.03	0.37	0.38	0.25	0.23	0.24
H	0.10	0.01	0.01	0.00	0.00	0.02	0.03	0.00	0.01	0.01	0.01	0.00	0.01	0.02
I	1.44	1.25	0.74	0.33	0.60	0.61	1.24	1.20	0.27	0.51	0.14	0.65	0.75	0.75
x	1.35	1.33	1.50	1.61	1.31	0.88	1.65	0.84	0.93	1.18	0.66	0.86	1.18	1.17
r	0.36	0.29	0.21	0.25	0.23	0.11	0.37	0.25	0.15	0.19	0.08	0.15	0.22	0.22
s	1.83	2.05	1.34	0.90	0.89	0.90	1.43	1.73	0.26	0.77	0.37	1.15	1.14	1.14
a	1.45	1.90	1.49	1.84	1.47	1.25	1.51	0.94	0.40	0.88	0.39	0.89	1.20	1.20
h	0.15	0.06	0.02	0.03	0.01	0.09	0.01	0.00	0.02	0.09	0.07	0.02	0.05	0.05
k	0.14	0.77	0.45	0.18	0.15	0.24	0.04	0.01	0.17	0.47	0.50	0.33	0.28	0.29
x	2.19	1.91	1.59	1.05	1.41	1.19	2.18	1.62	0.80	1.12	0.59	1.30	1.42	1.41
o	2.92	3.87	2.73	3.15	1.91	1.74	2.57	1.95	0.95	2.03	1.02	1.64	2.20	2.21
i	0.17	0.59	0.60	0.56	0.67	0.52	0.26	0.17	0.18	0.39	0.42	0.42	0.41	0.41
c	0.01	0.03	0.09	0.06	0.08	0.02	0.00	0.01	0.00	0.04	0.05	0.04	0.04	0.04
CV	60.76	95.61	69.67	62.15	48.44	47.88	43.88	39.83	19.22	52.86	41.72	48.44	52.30	52.54
CVn	13.84	52.78	29.11	23.94	38.63	23.40	17.25	25.85	10.72	20.45	25.37	31.33	25.89	26.06
CVs	46.91	42.83	40.56	38.21	9.81	24.48	26.64	13.98	8.50	32.41	16.35	17.12	26.40	26.48