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

Statistics of sunspot activity

September, 2001

Visual indices of solar activity by National Geophysical Data Center

Date123456789101112131415161718192021222324252627282930Average%
W152.75148.33159.50159.33269.00199.33262.67268.00266.50211.75169.00240.50217.00215.50195.67186.00156.75198.00218.00250.50257.25239.75268.50312.25309.75274.50276.25211.67219.00255.00225.60100
Wn77.5072.3373.5068.33102.0055.6771.3375.2568.2547.7535.5052.5044.6754.5067.0086.2583.00122.75149.25159.50156.50162.00154.25177.50186.00170.75169.25126.33119.75138.00104.2446.21
Ws75.2576.0086.0091.00167.00143.67191.33192.75198.25164.00133.50188.00172.33161.00128.6799.7573.7575.2568.7591.00100.7577.75114.25134.75123.75103.75107.0085.3399.25117.00121.3653.79
n6.256.678.508.3314.0010.0011.0010.509.757.756.259.009.008.009.0010.7510.0013.0013.2514.2512.5012.5012.7515.0014.2514.2515.0012.3311.0013.0010.93100
A0.500.000.000.000.500.670.001.001.001.000.000.000.000.001.331.750.250.500.751.501.000.500.001.001.000.501.250.670.251.000.605.47
B0.500.670.500.000.000.000.331.000.250.500.000.500.330.000.331.250.000.251.751.750.500.751.000.000.500.000.750.330.001.000.494.50
C0.000.002.001.671.500.332.670.000.750.501.001.501.000.500.332.252.003.003.252.502.252.252.503.251.501.000.750.331.003.001.4913.60
D1.001.672.502.003.001.331.332.752.251.502.253.002.673.503.331.002.003.503.254.255.505.004.005.255.005.754.754.004.504.003.1929.23
E0.001.000.000.331.502.002.002.251.250.751.000.501.000.500.670.000.250.250.500.750.250.000.500.250.500.501.001.331.001.000.766.96
F1.250.331.000.670.501.671.001.251.501.251.001.501.331.501.672.001.000.751.000.500.751.501.501.001.001.251.001.331.001.001.1310.37
G0.750.670.500.672.000.001.671.251.501.500.751.001.001.000.671.000.750.250.251.001.250.501.251.250.750.750.250.000.000.000.817.37
H0.250.000.000.670.500.000.000.000.250.000.000.000.000.000.000.000.250.500.250.000.000.000.000.250.000.000.000.000.000.000.100.89
I2.002.332.002.334.504.002.001.001.000.750.251.001.671.000.671.503.504.002.252.001.002.002.002.754.004.505.254.333.252.002.3621.61
x1.000.670.500.000.500.670.332.001.251.500.000.500.330.001.673.000.250.752.503.251.501.251.001.001.500.502.001.000.252.001.099.96
r0.000.330.500.000.000.670.000.250.250.500.000.000.000.000.000.500.001.000.500.750.250.000.250.000.000.000.250.670.000.000.222.03
s1.502.675.003.676.502.332.332.752.251.251.001.002.334.003.333.504.256.255.003.002.754.754.506.256.008.007.255.335.005.003.9636.22
a1.501.000.503.004.504.005.672.753.752.753.256.505.003.003.002.254.003.254.005.505.753.753.504.754.753.753.253.334.003.003.6333.25
h0.250.000.000.330.500.000.000.000.000.000.250.000.000.000.330.250.000.250.000.000.000.000.000.000.000.000.250.000.000.000.080.74
k2.002.002.001.332.002.332.672.752.251.751.751.001.331.000.671.251.501.501.251.752.252.753.503.002.002.002.002.001.753.001.9417.79
x2.752.332.003.005.504.672.002.002.251.750.251.001.671.002.003.254.005.003.253.502.002.502.004.005.005.006.505.003.503.003.0627.96
o2.253.005.504.336.001.676.004.754.753.754.006.005.005.004.675.504.756.758.258.257.756.757.758.757.006.755.504.335.007.005.5650.86
i1.000.670.500.671.503.002.332.751.751.501.250.501.000.502.332.001.251.250.751.501.502.251.751.001.251.251.753.002.252.001.5314.03
c0.250.670.500.331.000.670.671.001.000.750.751.501.331.500.000.000.000.001.001.001.251.001.251.251.001.251.250.000.251.000.787.14
CV145.00158.00185.00170.33288.50210.67243.33259.00228.00170.75175.50185.50201.67204.50184.67168.50179.00220.00211.25233.75262.75281.25303.75319.00272.00301.00285.50241.00228.00263.00226.01100
CVn67.7563.3362.5069.67111.0062.0078.0074.5068.0047.2547.0057.5044.3359.0063.3358.7585.75135.25120.25123.75144.50165.50182.50197.75155.25172.50153.25115.67109.25138.00101.1044.73
CVs77.2594.67122.50100.67177.50148.67165.33184.50160.00123.50128.50128.00157.33145.50121.33109.7593.2584.7591.00110.00118.25115.75121.25121.25116.75128.50132.25125.33118.75125.00124.9055.27