The Sunspot Observer - Average annual indices of solar activity NGDC - Solar activity in 2015

Statistics of sunspot activity

Solar activity in 2015

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
W96.7367.1262.2281.5691.6179.4674.1759.8274.9456.7761.0950.9571.3771.37
Wn32.2141.6823.8346.3743.7349.5538.9621.8633.9927.3652.0922.1836.0136.15
Ws64.5225.4338.3835.1847.8829.9135.2137.9640.9529.429.0028.7635.3735.22
n5.803.924.025.145.694.234.943.214.383.683.623.254.334.32
A0.790.860.900.771.060.620.870.700.610.660.820.540.770.77
B0.620.640.640.831.020.470.520.380.690.380.620.240.590.59
C0.770.860.911.411.170.790.690.461.010.520.730.580.820.83
D1.190.600.481.090.480.830.740.410.700.580.700.460.690.69
E0.300.130.270.210.160.550.140.280.360.250.060.270.250.25
F0.280.210.040.040.310.160.030.150.060.100.210.080.140.14
G0.430.150.020.020.040.150.250.050.260.100.120.260.160.16
H0.020.020.020.110.010.010.050.020.160.010.010.110.050.05
I1.410.450.730.661.450.651.650.750.521.090.360.710.880.87
x1.411.501.551.592.081.091.391.091.301.031.440.771.361.35
r0.410.210.280.410.430.200.220.350.430.370.410.400.350.34
s1.470.970.691.261.610.941.940.570.740.900.590.651.031.03
a1.771.100.901.351.261.431.090.661.300.961.010.881.141.14
h0.050.000.040.120.000.030.020.030.190.010.000.140.050.05
k0.680.150.580.410.310.530.280.500.420.410.170.400.410.40
x2.221.341.661.542.521.282.561.471.301.761.191.361.691.68
o2.471.801.582.702.491.781.831.012.101.301.761.401.851.85
i0.560.440.410.490.200.540.370.250.560.340.390.190.400.39
c0.560.350.380.420.490.620.180.480.430.280.290.290.400.40
CV91.9545.6753.3269.8760.0371.0959.0848.3366.3549.7841.0652.0459.1359.05
CVn25.1028.8013.0244.4932.2747.5837.7311.3323.2328.3436.3426.6529.4929.58
CVs66.8516.8740.3025.3827.7623.5121.3537.0043.1221.444.7225.3929.6429.47