The Sunspot Observer - Average annual indices of solar activity NGDC - Solar activity in 2011

Statistics of sunspot activity

Solar activity in 2011

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
N31.0028.0031.0030.0031.0030.0031.0031.0030.0031.0030.0031.0030.4230.42
W30.3448.0874.3375.3857.0252.8061.1266.91104.63110.55119.3195.1074.7074.63
Wn19.9028.7050.5054.4835.1731.3644.1453.3480.8176.4783.5349.8750.7450.69
Ws10.4519.3723.8320.9021.8521.4416.9713.5723.8234.0835.7845.2323.9623.94
n2.082.623.794.354.103.374.004.016.106.997.656.224.614.61
A0.260.400.510.780.790.630.760.690.500.650.670.550.600.60
B0.420.520.800.610.750.660.470.660.690.700.460.710.620.62
C0.380.410.480.940.690.640.860.601.511.221.831.390.920.91
D0.400.680.500.790.630.690.920.811.521.401.631.550.960.96
E0.030.400.750.450.030.090.190.350.300.380.260.160.280.28
F0.000.030.170.030.000.010.000.040.150.120.220.000.070.06
G0.020.040.220.250.060.150.050.200.230.380.390.260.190.19
H0.020.010.000.030.000.010.010.030.100.460.030.110.070.07
I0.560.130.370.461.140.510.740.641.101.692.161.490.920.92
x0.680.921.311.381.541.291.231.341.191.351.131.261.231.22
r0.160.280.310.340.220.250.260.310.550.450.660.430.350.35
s1.010.770.771.381.801.211.611.342.232.764.152.781.821.82
a0.210.420.600.760.430.390.630.401.141.041.261.060.700.70
h0.030.080.170.180.050.200.150.280.470.830.110.440.250.25
k0.000.140.630.300.060.030.130.330.520.560.350.260.280.28
x0.840.540.871.271.931.141.511.351.702.802.862.151.591.58
o1.001.341.652.191.821.861.941.883.603.243.923.382.332.32
i0.240.370.590.610.310.330.400.370.370.600.450.530.430.43
c0.000.370.680.280.030.040.150.400.420.340.420.160.270.27
CV21.5742.1273.4465.0039.4141.1651.5665.05105.92126.86111.8595.5870.0869.96
CVn15.7325.3153.4249.0522.4625.4338.6756.9089.4096.9077.9347.2449.9649.87
CVs5.8416.8120.0215.9516.9415.7312.908.1516.5329.9733.9348.3420.1220.09