The Sunspot Observer - Average annual indices of solar activity NGDC - April, 2003

Statistics of sunspot activity

April, 2003

Visual indices of solar activity by National Geophysical Data Center

Date123456789101112131415161718192021222324252627282930Average%
W147.33181.00141.25131.50103.5085.0070.6752.0078.5072.0047.7556.0059.2561.5050.3334.5045.5046.6755.2580.00143.00128.50118.75157.33182.67185.00196.00187.00206.50160.67108.83100
Wn56.3374.0064.0055.5048.2536.3333.6736.3349.0038.3333.2533.3332.5031.0024.002.7517.5015.3324.7541.2570.0070.2585.00104.67128.67106.0075.6750.3347.0037.6750.7646.64
Ws91.00107.0077.2576.0055.2548.6737.0015.6729.5033.6714.5022.6726.7530.5026.3331.7528.0031.3330.5038.7573.0058.2533.7552.6754.0079.00120.33136.67159.50123.0058.0853.36
n8.008.677.257.006.506.005.674.005.254.673.003.004.004.254.002.253.503.674.255.257.336.755.758.339.0010.3310.008.678.008.336.09100
A0.000.670.000.251.001.000.330.330.751.000.500.330.000.250.330.750.500.330.250.251.671.001.001.671.000.670.330.670.500.000.589.49
B0.000.000.250.250.500.000.330.670.251.000.250.330.000.250.000.000.750.670.750.750.000.250.000.671.671.671.331.670.500.000.498.07
C1.671.001.252.501.250.671.330.671.501.671.751.672.251.751.001.250.500.670.500.251.671.251.501.331.332.001.000.671.001.001.2620.71
D2.333.673.501.751.753.330.670.672.250.670.500.671.251.501.330.000.250.000.501.502.003.001.503.333.333.335.674.335.504.002.1435.08
E1.331.000.250.250.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.250.000.251.000.670.331.000.670.330.000.670.274.38
F0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.330.000.000.000.000.000.000.000.000.000.010.18
G0.000.330.750.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.250.330.250.250.000.330.000.000.330.500.330.122.01
H0.330.000.501.001.250.000.670.330.000.000.000.000.000.251.000.000.000.330.250.000.000.000.000.000.000.000.000.000.000.330.213.42
I2.332.000.751.000.751.002.331.330.500.330.000.000.500.250.330.251.501.672.002.001.330.750.500.671.001.671.000.670.002.001.0116.65
x0.000.670.250.501.501.000.671.001.002.000.750.670.000.500.330.751.251.001.001.001.671.251.002.332.672.331.672.331.000.001.0717.56
r0.331.330.000.250.250.000.000.000.250.000.250.000.000.250.670.000.500.000.000.001.000.500.500.000.000.330.330.330.000.330.254.06
s2.002.332.001.750.751.331.331.671.251.000.500.672.001.752.000.251.501.331.002.001.332.501.503.002.003.003.001.672.003.001.7128.15
a4.673.003.502.752.001.671.670.001.750.670.500.671.250.750.001.250.251.002.001.252.331.752.002.003.333.003.672.333.502.671.9131.30
h0.330.330.751.000.500.330.670.670.000.330.750.670.750.751.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.294.84
k0.671.000.750.751.501.671.330.671.000.670.250.330.000.250.000.000.000.330.251.001.000.750.751.001.001.671.332.001.502.330.8614.10
x2.672.671.252.253.002.003.332.001.251.330.500.330.500.751.671.002.002.332.502.253.001.751.502.332.002.331.331.330.502.331.8029.56
o4.003.334.503.251.753.332.332.003.752.672.502.333.003.252.331.251.501.331.502.752.673.503.005.006.006.337.335.336.005.003.4356.30
i0.332.331.251.001.500.670.000.000.250.670.000.330.500.250.000.000.000.000.250.251.671.501.000.670.671.671.331.670.500.670.7011.45
c1.000.330.250.500.250.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.250.330.330.000.000.331.000.330.162.69
CV150.00172.00162.75142.75129.75138.67109.3377.3389.5064.0057.5060.0077.2585.2582.0013.2525.0035.0042.2589.25108.00116.7596.25137.00136.67168.00185.00170.67182.50194.33109.93100
CVn65.0086.0098.0094.0093.7587.3384.6766.6767.0046.0044.5050.0051.2550.2546.331.759.2511.6710.2534.5048.6764.5058.0080.0074.67103.0076.6756.0044.0069.6759.1153.77
CVs85.0086.0064.7548.7536.0051.3324.6710.6722.5018.0013.0010.0026.0035.0035.6711.5015.7523.3332.0054.7559.3352.2538.2557.0062.0065.00108.33114.67138.50124.6750.8246.23