The Sunspot Observer - Average annual indices of solar activity NGDC - December, 2001

Statistics of sunspot activity

December, 2001

Visual indices of solar activity by National Geophysical Data Center

Date12345678910111213141516171819202122232425262728293031Average%
W195.25229.25216.00209.50248.33217.33191.25199.50212.00178.75152.00182.33187.67189.67184.00184.00214.00194.33151.00166.75203.25202.50201.00176.00242.00272.67252.00233.00213.75202.67198.50203.23100
Wn95.25103.2584.7578.5089.6793.3397.0094.50105.2590.2573.6791.0083.0089.6796.00103.33107.50101.6791.75115.25117.25109.75121.00107.00121.50138.00123.00107.50101.7582.6797.00100.3549.38
Ws100.00126.00131.25131.00158.67124.0094.25105.00106.7588.5078.3391.33104.67100.0088.0080.67106.5092.6759.2551.5086.0092.7580.0069.00120.50134.67129.00125.50112.00120.00101.50102.8850.62
n10.7511.0010.2511.5013.0013.3312.5011.7512.5010.007.679.009.339.008.338.6710.0010.008.508.7510.2510.509.338.009.5013.6712.6712.5011.0011.3311.0010.50100
A0.000.250.250.250.331.000.750.250.751.000.331.331.000.670.000.330.001.330.500.250.250.500.330.000.001.000.670.501.251.000.000.524.94
B0.000.500.000.500.000.330.500.250.501.500.000.330.670.330.330.001.000.671.501.501.251.250.330.000.501.331.331.500.750.330.500.635.99
C2.252.503.004.502.332.672.251.752.250.500.672.671.331.330.671.331.002.001.004.003.252.502.332.001.753.002.333.251.502.332.002.1420.35
D3.503.503.753.507.336.676.005.755.252.252.002.003.332.673.003.334.501.671.001.503.253.503.332.002.253.001.331.253.254.004.503.3631.99
E1.751.251.001.000.670.670.000.000.751.251.671.671.671.331.331.001.002.001.500.750.250.500.670.002.252.673.001.250.751.332.001.1911.34
F0.250.000.250.000.000.000.000.250.250.250.330.000.330.000.000.000.000.000.000.250.750.751.001.001.000.330.331.251.250.670.000.343.22
G1.501.500.751.251.330.000.751.750.500.000.000.000.001.001.670.671.000.671.250.000.000.500.673.000.750.670.670.750.250.000.500.757.17
H0.000.000.000.250.000.670.000.000.000.000.000.000.000.000.000.000.000.000.000.000.250.250.000.000.000.000.000.000.000.000.000.050.44
I1.501.501.250.251.001.332.251.752.253.252.671.001.001.671.332.001.501.671.750.501.000.750.670.001.001.673.002.752.001.671.501.5314.56
x0.000.750.250.750.331.331.250.501.252.500.331.671.671.000.330.331.002.002.001.751.501.750.670.000.502.332.002.002.001.330.501.1510.93
r0.500.000.001.000.330.000.500.250.250.000.000.000.000.001.000.000.000.000.250.250.250.000.330.001.000.670.330.500.000.330.000.252.38
s4.005.004.004.006.007.675.255.256.004.753.673.003.674.332.004.331.002.672.252.754.254.252.331.002.756.005.334.754.005.005.004.0738.78
a3.503.003.502.753.331.333.753.753.501.502.332.672.002.334.333.336.504.003.753.253.002.754.335.003.002.003.335.004.754.335.003.4532.84
h0.000.000.000.750.000.330.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.500.000.000.000.330.000.000.000.000.000.060.59
k2.752.252.502.253.002.671.752.001.501.251.331.672.001.330.670.671.501.330.250.751.251.251.672.002.252.331.670.250.250.330.501.5214.49
x1.501.751.500.751.333.003.002.003.004.253.002.332.002.331.332.331.503.002.250.751.501.501.000.001.002.673.673.253.252.671.502.0919.94
o7.007.256.509.0010.339.008.508.257.253.752.674.005.334.335.334.676.004.334.506.757.757.756.337.005.007.675.676.755.755.677.506.3760.69
i1.250.751.751.501.001.000.251.252.001.751.001.671.001.671.331.672.502.331.501.000.500.751.330.002.502.673.001.751.502.672.001.5114.38
c1.001.250.500.250.330.330.750.250.250.251.001.001.000.670.330.000.000.330.250.250.500.500.671.001.000.670.330.750.500.330.000.524.99
CV260.75244.75233.00255.75312.67299.00241.00255.25233.00160.75164.67169.33202.67184.00162.00161.67193.00167.67118.75119.75176.25205.75197.33201.00227.50278.00221.00176.75171.25188.67203.50206.01100
CVn137.75109.0098.00109.25134.00133.67101.50101.50107.5083.0063.0060.6767.3354.6764.6784.6798.0098.0066.0077.0091.00131.25131.67145.00128.00145.67108.3384.7581.5085.3394.0099.2248.16
CVs123.00135.75135.00146.50178.67165.33139.50153.75125.5077.75101.67108.67135.33129.3397.3377.0095.0069.6752.7542.7585.2574.5065.6756.0099.50132.33112.6792.0089.75103.33109.50106.8051.84