The Sunspot Observer - Average annual indices of solar activity NGDC - April, 2000

Statistics of sunspot activity

April, 2000

Visual indices of solar activity by National Geophysical Data Center

Date123456789101112131415161718192021222324252627282930Average%
W280.50304.33240.50176.75200.00146.25149.00148.50163.00151.67131.67156.25167.50161.00151.67140.25157.50134.33147.50157.75178.50209.25241.67216.50198.25190.25155.75184.50133.33116.00176.33100
Wn112.75116.00108.0073.7578.0050.7544.6744.0037.3338.0046.0059.2572.0085.3371.3370.5073.0066.0089.0084.75104.25124.00127.00116.75109.25101.0075.0068.7546.6738.7577.7344.08
Ws167.75188.33132.50103.00122.0095.50104.33104.50125.67113.6785.6797.0095.5075.6780.3369.7584.5068.3358.5073.0074.2585.25114.6799.7589.0089.2580.75115.7586.6777.2598.6055.92
n15.2514.6714.0011.5012.3310.009.678.509.338.338.008.5011.2511.009.338.5011.509.339.7510.5011.5012.0013.3311.758.758.257.508.757.336.2510.22100
A1.251.002.500.001.001.000.671.502.331.331.330.001.001.001.000.001.501.000.251.000.000.252.002.750.750.751.001.500.670.001.019.89
B1.500.671.000.250.330.751.330.250.000.001.001.752.751.330.671.251.500.672.250.501.001.252.000.750.250.750.751.750.670.500.989.59
C1.502.332.502.002.332.503.002.753.332.002.332.752.503.002.332.502.502.671.751.501.253.500.670.250.501.001.001.751.332.252.0520.08
D5.758.006.505.754.002.750.670.750.671.001.331.752.501.671.671.500.501.331.002.252.252.003.333.002.502.000.751.001.001.002.3422.88
E0.500.330.000.500.000.000.331.000.670.670.330.250.000.000.000.000.000.000.000.000.250.750.671.001.251.500.750.751.000.500.434.24
F0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.250.250.500.000.000.000.030.33
G1.250.330.000.251.670.000.670.500.330.331.331.251.001.001.001.251.001.001.252.503.502.752.672.752.502.002.252.001.001.251.3513.23
H0.000.000.000.000.000.250.000.000.000.000.000.000.000.000.000.000.000.000.000.500.250.000.000.000.000.000.000.000.000.000.030.33
I3.502.001.502.753.002.753.001.752.003.000.330.751.503.002.672.004.502.673.252.253.001.502.001.250.750.000.500.001.670.751.9919.43
x2.751.673.500.251.331.752.001.752.331.332.331.753.752.331.671.253.001.672.501.501.001.504.003.501.001.501.753.251.330.501.9919.48
r2.000.000.001.000.670.500.330.000.000.330.330.500.750.670.671.001.001.671.251.001.251.750.330.250.250.000.250.500.330.750.646.30
s4.507.337.006.005.334.755.674.005.004.333.333.253.505.005.004.003.004.003.003.503.503.502.002.752.001.001.752.502.331.503.8137.28
a5.005.003.003.004.332.501.672.752.002.331.673.002.502.671.672.004.502.003.004.004.003.255.003.253.253.751.750.501.331.502.8728.10
h0.000.000.000.000.000.250.000.000.000.000.000.000.250.000.330.000.000.000.000.250.000.000.000.000.250.000.000.000.000.250.050.52
k1.000.670.501.250.670.250.000.000.000.000.330.000.500.330.000.250.000.000.000.251.752.002.002.002.002.002.002.002.001.750.858.32
x4.753.004.002.754.004.003.673.254.334.331.670.752.504.003.672.006.003.673.503.753.251.754.004.001.500.751.501.502.330.753.0329.65
o8.7510.339.007.256.675.505.004.254.003.335.677.008.506.005.676.505.505.675.756.508.009.258.676.755.755.754.756.254.004.756.3662.20
i1.251.000.001.251.330.501.000.501.000.670.330.750.251.000.000.000.000.000.500.250.250.500.000.500.751.000.500.250.330.750.555.35
c0.500.331.000.250.330.000.000.500.000.000.330.000.000.000.000.000.000.000.000.000.000.500.670.500.750.750.750.750.670.000.292.80
CV231.00256.33214.00218.50194.33128.75102.33103.7595.6793.33109.00108.50134.50125.67119.33109.5092.0095.6793.00155.00206.75210.00217.00215.75214.75188.25166.75162.25146.67133.25154.72100
CVn97.50107.3385.5091.0070.0045.5035.6744.0030.3325.0018.0025.5029.2543.0049.0053.2545.5055.3358.7583.75113.00114.50125.00120.75122.50102.25102.0079.7564.6757.7569.8445.14
CVs133.50149.00128.50127.50124.3383.2566.6759.7565.3368.3391.0083.00105.2582.6770.3356.2546.5040.3334.2571.2593.7595.5092.0095.0092.2586.0064.7582.5082.0075.5084.8854.86