The Sunspot Observer - Average annual indices of solar activity NGDC - Solar activity in 2000

Statistics of sunspot activity

Solar activity in 2000

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
N31293130313031313031303130.5030.50
W129.86148.33195.47176.33168.16174.56214.37160.07142.27131.56142.49134.35159.89159.82
Wn55.6258.8476.9877.7383.05111.99115.7186.8777.0754.8683.8983.0080.5180.47
Ws74.2489.49118.4998.6085.1062.5798.6673.2065.2076.7058.6051.3579.3879.35
n7.849.4010.3310.228.539.7211.3210.116.907.718.258.069.049.03
A0.750.930.941.011.100.700.721.040.750.720.721.140.870.88
B1.161.391.090.981.450.820.700.840.820.610.420.700.920.92
C2.071.861.802.051.911.841.732.481.291.631.641.431.811.81
D1.792.252.932.341.662.302.222.411.422.951.741.942.172.16
E0.220.280.890.430.540.250.550.410.730.240.260.370.440.43
F0.050.100.100.030.200.480.770.020.340.050.340.040.210.21
G0.590.661.021.350.800.921.020.440.490.480.880.580.770.77
H0.020.070.070.030.150.230.080.000.000.050.040.010.060.06
I1.191.861.491.990.742.203.532.481.060.962.221.861.801.80
x1.912.322.031.992.551.521.421.881.571.331.141.831.791.79
r0.470.680.700.640.560.790.560.840.430.440.350.410.570.57
s2.883.563.323.812.163.424.694.351.973.153.243.113.303.31
a2.362.232.872.871.592.413.562.982.182.542.982.382.582.58
h0.020.190.130.050.330.360.110.000.000.090.110.030.120.12
k0.190.421.280.851.341.220.980.070.750.160.440.310.670.67
x1.962.852.503.031.983.124.333.521.811.742.983.012.732.74
o5.445.986.116.365.235.595.185.893.714.954.534.335.275.27
i0.320.411.090.550.670.740.920.630.880.910.560.700.700.70
c0.120.160.640.290.650.270.890.080.500.110.190.030.330.33
CV97.38127.75182.31154.72147.24168.83187.61121.23111.89117.49123.72104.89137.11137.09
CVn44.2952.0768.5669.8474.45107.12106.9565.2862.0745.6372.8659.8469.0769.08
CVs53.0975.68113.7484.8772.7961.7080.6655.9449.8271.8650.8645.0568.0468.01