The Sunspot Observer - Average annual indices of solar activity

Solar activity in 2011

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	11	15	12	11	18	19	17	14	13	6	5	4	12.08	12.08
W	24.73	49.47	80.5	105.55	79.94	56.84	68.06	67.07	122.62	158.33	141.2	108.25	78.89	88.55
Wn	20.18	28.73	56.00	87.00	51.94	31.79	46.24	52.57	94.46	98.17	110.6	67.00	55.04	62.06
Ws	4.55	20.73	24.5	18.55	28.00	25.05	21.82	14.50	28.15	60.17	30.6	41.25	23.85	26.49
n	1.82	2.67	4.00	5.27	5.00	3.58	4.06	4.00	6.69	9.33	7.80	7.75	4.57	5.16
A	0.09	0.13	0.17	0.55	0.61	0.68	0.59	0.50	0.15	0.83	0.80	0.75	0.46	0.49
B	0.36	0.40	0.67	1.09	0.89	0.89	0.65	0.86	1.15	2.00	0.60	1.50	0.84	0.92
C	0.27	0.40	0.33	1.00	0.78	0.58	1.00	0.71	1.69	1.67	2.00	1.25	0.85	0.97
D	0.36	1.07	1.08	0.55	1.44	0.79	0.94	0.71	1.62	1.33	1.40	1.50	1.02	1.07
E	0.00	0.47	1.08	0.55	0.00	0.00	0.18	0.36	0.38	0.83	0.20	0.25	0.32	0.36
F	0.00	0.00	0.08	0.00	0.00	0.00	0.00	0.14	0.23	0.00	0.80	0.00	0.07	0.10
G	0.00	0.07	0.17	0.55	0.06	0.16	0.00	0.14	0.23	0.00	0.00	0.25	0.13	0.14
H	0.72	0.07	0.17	0.45	0.39	0.11	0.00	0.14	0.46	1.50	0.20	0.50	0.31	0.39
I	0.00	0.07	0.25	0.55	0.83	0.37	0.71	0.43	0.77	1.17	1.80	1.75	0.57	0.73
x	0.45	0.53	0.83	1.64	1.50	1.58	1.24	1.36	1.31	2.83	1.40	2.25	1.30	1.41
r	0.18	0.60	0.92	0.73	0.28	0.11	0.29	0.64	0.77	0.00	0.80	4.00	0.56	0.78
s	0.81	0.07	0.42	0.64	1.28	1.00	1.06	1.00	1.77	3.33	3.80	2.75	1.17	1.49
a	0.18	0.93	0.50	1.27	1.83	0.68	1.18	0.57	2.00	1.50	1.20	1.25	1.08	1.09
h	0.18	0.13	0.00	0.36	0.00	0.21	0.00	0.21	0.23	1.17	0.00	0.50	0.19	0.25
k	0.00	0.40	1.25	0.64	0.11	0.00	0.29	0.21	0.62	0.50	0.60	0.00	0.36	0.38
x	0.81	0.27	0.58	1.55	1.83	1.16	1.29	1.07	1.38	3.50	2.80	3.00	1.34	1.60
o	0.81	1.27	1.75	2.36	2.16	1.95	1.76	2.07	3.31	3.67	2.40	4.00	2.09	2.29
i	0.18	0.93	1.42	1.27	0.94	0.42	0.94	0.79	1.54	1.67	2.00	0.75	0.98	1.07
c	0.00	0.20	0.25	0.09	0.06	0.05	0.06	0.07	0.46	0.50	0.60	0.00	0.16	0.20
CV	24.55	53.13	90.75	81.82	54.28	39.53	49.00	54.21	109.00	146.83	117.4	91.25	66.39	75.98
CVn	20.73	38.27	68.17	57.64	34.72	24.37	36.00	47.64	87.92	95.00	91.20	45.50	48.08	53.93
CVs	3.82	14.87	22.58	24.18	19.56	15.16	13.00	6.57	21.08	51.83	26.20	45.75	18.30	22.05
gr	1.00	2.47	3.42	4.36	3.66	2.74	3.18	3.36	6.08	7.17	5.60	6.25	3.66	4.11
grfp	2.55	12.67	24.92	28.91	15.06	8.26	11.59	12.57	25.77	25.33	28.80	12.00	15.97	17.37
grf	3.18	9.93	15.42	23.82	14.06	11.89	15.00	13.86	29.31	37.00	32.20	17.25	16.5	18.58
efp	0.72	0.07	0.42	0.55	0.89	0.32	0.35	0.36	0.46	1.67	1.60	1.00	0.56	0.70
ef	0.09	0.13	0.17	0.36	0.44	0.53	0.53	0.29	0.15	0.50	0.60	0.50	0.34	0.36
Cond	2.64	2.40	2.33	2.09	2.17	2.05	1.88	2.50	2.85	3.00	2.80	3.00	2.36	2.48