The Sunspot Observer - Average annual indices of solar activity NGDC - Solar activity in 2013

Statistics of sunspot activity

Solar activity in 2013

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
W92.3757.3074.82107.39116.5577.9681.6990.2653.61119.85118.23120.0292.8392.50
Wn63.3836.3841.1060.1158.6325.8921.3531.1925.9841.3029.4024.3238.3038.25
Ws28.9920.9233.7347.2857.9252.0760.3459.0727.6378.5588.8395.7054.5454.25
n6.184.035.336.207.074.924.556.053.847.166.297.335.775.75
A0.580.490.740.781.130.690.970.821.070.860.751.100.840.83
B0.490.420.740.510.960.510.600.740.241.010.581.080.660.66
C1.050.761.131.291.321.110.601.420.801.251.141.151.091.08
D0.580.961.111.781.971.260.951.260.671.771.471.251.251.25
E0.180.000.210.290.380.030.300.120.020.440.500.620.270.26
F0.240.000.000.100.040.000.090.000.000.040.140.050.060.06
G0.420.030.150.070.270.100.430.140.110.110.180.170.180.18
H0.150.120.230.140.100.110.030.100.060.090.360.330.150.15
I2.491.261.031.240.911.110.601.450.881.601.171.581.281.28
x1.070.901.481.282.091.211.561.561.311.871.332.181.501.49
r0.610.190.300.480.600.440.300.560.380.590.370.410.440.44
s2.281.771.751.922.031.641.312.311.472.151.851.911.871.87
a1.580.821.351.601.581.070.991.130.581.491.481.861.301.29
h0.240.230.280.180.100.060.020.060.060.220.170.120.150.15
k0.400.130.170.740.670.500.370.430.030.851.090.840.520.52
x3.221.871.992.162.141.911.592.372.002.552.283.022.262.26
o2.411.832.972.703.942.302.413.111.633.582.693.052.732.72
i0.290.260.350.740.770.480.220.390.140.400.390.680.430.43
c0.260.080.010.600.220.230.340.180.070.630.920.580.350.34
CV83.8553.6569.18105.04103.3868.6965.2376.8338.02112.81117.59107.5883.7583.49
CVn58.8139.2440.6655.0651.9617.9618.1021.1218.9432.3234.2522.3734.2234.23
CVs25.0514.4128.5249.9851.4250.7347.1255.7019.0880.4883.3485.2149.5349.25