The Sunspot Observer - Average annual indices of solar activity

Solar activity in 1999

Visual indices of solar activity by author's observations

													Average by
month	I	II	III	IV	V	VI	VII	VIII	IX	X	XI	XII	days	months
N	3	8	9	13	15	20	30	19	12	16	7	6	13.17	13.17
W	55.33	98.14	58.22	80.00	111.67	122.45	147.50	118.68	87.83	147.13	179.57	95.50	117.45	108.50
Wn	28.67	58.57	35.44	30.92	68.73	71.60	80.97	56.74	67.67	102.69	103.00	55.17	68.06	63.35
Ws	26.67	39.57	22.78	49.08	42.93	50.85	66.53	61.95	20.17	44.44	76.57	40.33	49.40	45.16
n	3.33	5.86	4.11	4.15	7.07	7.55	7.60	4.89	5.58	8.13	7.29	4.67	6.34	5.85
A	0.00	0.29	0.11	0.23	0.13	0.40	0.17	0.21	0.08	0.25	0.14	0.00	0.20	0.17
B	0.00	0.14	0.11	0.08	0.07	0.30	0.30	0.32	0.00	0.19	0.29	0.00	0.19	0.15
C	0.67	0.57	0.33	0.62	1.47	0.95	1.10	1.53	1.42	1.44	1.00	1.17	1.11	1.02
D	0.67	1.57	0.89	1.62	2.27	2.35	2.03	1.05	1.58	2.13	2.29	1.00	1.78	1.62
E	0.33	0.00	0.33	0.46	0.80	0.85	0.77	0.26	0.58	0.94	1.86	0.67	0.67	0.65
F	0.00	0.71	0.00	0.00	0.13	0.40	0.67	0.63	0.00	0.13	0.43	0.33	0.35	0.29
G	0.00	0.29	0.00	0.31	0.40	0.30	0.37	0.21	0.17	0.25	0.57	0.33	0.28	0.27
H	1.33	0.71	1.67	0.31	1.00	1.00	1.53	0.42	1.17	1.31	0.29	0.33	0.99	0.92
I	0.33	1.57	0.67	0.54	0.80	1.00	0.67	0.26	0.58	1.50	0.43	0.83	0.78	0.77
x	0.00	0.43	0.22	0.31	0.20	0.70	0.47	0.53	0.08	0.44	0.43	0.00	0.39	0.32
r	0.00	0.00	0.33	0.08	0.60	0.55	0.70	0.26	0.42	0.75	0.14	0.50	0.45	0.36
s	2.00	2.71	2.56	1.69	2.47	3.10	2.30	1.11	1.67	1.63	1.57	0.83	2.05	1.97
a	1.00	1.71	1.00	1.92	3.00	2.15	3.27	2.00	3.33	4.56	4.14	2.17	2.72	2.52
h	0.00	0.14	0.00	0.00	0.33	0.30	0.00	0.26	0.00	0.06	0.00	0.17	0.12	0.11
k	0.33	0.86	0.00	0.15	0.47	0.75	0.87	0.74	0.08	0.69	1.00	1.00	0.61	0.58
x	1.67	2.57	2.44	1.08	1.93	2.40	2.37	0.89	1.83	3.06	0.86	1.17	1.97	1.86
o	0.67	1.29	0.78	1.46	3.27	2.80	2.93	2.47	2.75	3.25	3.14	2.33	2.53	2.26
i	0.33	1.29	0.56	1.31	1.80	2.05	2.00	1.42	1.00	1.69	2.43	0.83	1.58	1.39
c	0.67	0.71	0.33	0.31	0.07	0.30	0.30	0.11	0.00	0.13	0.86	0.33	0.27	0.34
CV	58.67	119.86	57.11	74.92	132.13	147.30	136.40	97.21	76.08	127.38	162.86	100.83	115.10	107.56
CVn	32.00	64.86	34.22	30.85	87.27	96.55	75.77	48.68	60.25	91.56	92.29	60.50	69.36	64.57
CVs	26.67	55.00	22.89	44.08	44.87	50.75	60.63	48.53	15.83	35.69	70.57	40.33	45.73	42.99
gr	2.00	3.75	2.67	3.31	5.60	5.75	6.20	4.53	4.50	6.94	7.00	4.00	5.15	4.69
grfp	12.00	22.13	11.89	26.23	25.93	32.55	49.03	48.95	18.67	57.13	72.13	32.50	37.81	34.10
grf	8.33	11.38	5.11	11.54	14.47	13.00	21.03	20.37	12.58	21.88	31.88	15.67	16.71	15.60
efp	1.33	1.25	1.22	0.62	1.27	1.15	1.37	0.26	0.92	0.81	0.25	0.67	0.95	0.93
ef	0.00	0.13	0.00	0.08	0.07	0.30	0.07	0.11	0.08	0.19	0.00	0.00	0.11	0.09
Cond	3.17	2.69	2.22	2.46	2.20	1.60	2.05	2.16	2.25	1.81	2.88	2.25	2.17	2.31