The Sunspot Observer - Average annual indices of solar activity - Solar activity in 1990 - August, 1990

Statistics of sunspot activity

August, 1990

Visual indices of solar activity by author's observations

Date	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	Average	%
W																			324	363	318	333			297							327.00	100
Wn																			168	149	84	92			77							114.00	34.86
Ws																			156	214	234	241			220							213.00	65.14
n																			16	18	15	14			12							15.00	100
A																			0	1	1	3			2							1.40	9.33
B																			7	5	2	0			2							3.20	21.33
C																			6	3	5	3			0							3.40	22.67
D																			2	3	1	3			1							2.00	13.33
E																			1	3	2	1			1							1.60	10.67
F																			0	1	1	1			1							0.80	5.33
G																			0	1	1	1			2							1.00	6.67
H																			0	1	2	1			3							1.40	9.33
I																			0	0	0	1			0							0.20	1.33
x																			7	6	3	3			4							4.60	30.67
r																			0	2	1	1			0							0.80	5.33
s																			4	3	6	4			4							4.20	28.00
a																			1	3	0	0			1							1.00	6.67
h																			3	2	2	2			0							1.80	12.00
k																			1	2	3	4			3							2.60	17.33
x																			0	2	3	5			5							3.00	20.00
o																			8	11	8	6			4							7.40	49.33
i																			7	4	3	1			3							3.60	24.00
c																			1	1	1	2			0							1.00	6.67
CV																			280	340	342	373			225							312.00	100
CVn																			135	120	80	79			41							91.00	29.17
CVs																			145	220	262	294			184							221.00	70.83