The Sunspot Observer - Average annual indices of solar activity NGDC - Solar activity in 2009

Statistics of sunspot activity

Solar activity in 2009

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
N31283130313031313031303130.4230.42
W4.312.992.691.614.707.016.230.428.339.279.4515.056.026.00
Wn2.441.281.900.733.754.190.350.425.627.858.359.523.883.87
Ws1.871.700.780.880.962.825.870.002.711.421.105.532.152.14
n0.320.260.230.130.370.520.360.030.620.560.720.970.420.42
A0.170.200.130.080.100.100.080.000.210.260.300.060.140.14
B0.130.050.090.000.190.220.050.000.130.060.350.400.150.14
C0.020.010.010.030.020.080.030.030.090.060.050.100.050.04
D0.010.000.000.000.000.040.140.000.100.170.020.230.060.06
E0.000.000.000.000.000.000.030.000.000.000.000.110.010.01
F0.000.000.000.000.000.000.000.000.000.000.000.000.000.00
G0.000.000.000.000.000.000.040.000.000.010.000.060.010.01
H0.000.000.000.000.000.000.000.000.000.000.000.000.000.00
I0.000.000.000.020.060.070.000.000.090.000.000.000.020.02
x0.300.250.220.080.290.320.130.000.340.330.650.470.280.28
r0.000.000.010.010.060.090.010.030.020.020.070.060.030.03
s0.010.010.000.010.020.070.120.000.070.050.000.190.050.05
a0.020.000.000.030.000.050.100.000.190.130.000.190.060.06
h0.000.000.000.000.000.000.000.000.000.010.000.050.010.00
k0.000.000.000.000.000.000.010.000.010.030.000.000.000.00
x0.170.200.130.100.160.170.080.000.300.260.300.060.160.16
o0.140.070.100.030.210.310.160.030.260.120.270.690.200.20
i0.010.000.000.000.000.040.120.000.060.160.150.150.060.06
c0.000.000.000.000.000.000.000.000.010.020.000.060.010.01
CV0.760.430.350.470.922.585.440.164.295.931.6512.773.012.98
CVn0.460.280.190.070.681.300.030.163.085.811.558.231.841.82
CVs0.310.150.150.400.241.285.410.001.210.130.104.551.181.16