The Sunspot Observer - Average annual indices of solar activity NGDC - May, 1991

Statistics of sunspot activity

May, 1991

Visual indices of solar activity by National Geophysical Data Center

Date12345678910111213141516171819202122232425262728293031Average%
W114.29108.00128.60142.00144.33127.29126.33126.25184.17166.86198.50199.43152.00160.33162.50164.40175.00176.29160.67168.80127.40150.14221.00142.20164.57232.80187.50154.20139.6792.6769.50153.80100
Wn30.8633.7129.8038.8339.1746.0056.8366.75106.0094.14113.33122.1493.1484.1778.5083.4072.5064.4348.1756.2041.4057.14113.5091.40103.43134.00103.83102.6092.3362.1745.0074.3548.34
Ws83.4374.2998.80103.17105.1781.2969.5059.5078.1772.7185.1777.2958.8676.1784.0081.00102.50111.86112.50112.6086.0093.00107.5050.8061.1498.8083.6751.6047.3330.5024.5079.4451.66
n6.435.437.607.177.006.296.507.009.178.149.678.717.719.6710.8310.6011.3311.4310.0010.407.808.5713.006.607.8612.209.007.406.335.173.758.35100
A0.290.140.600.830.670.140.330.500.670.571.170.431.001.001.831.802.672.140.502.401.801.001.750.400.710.400.830.800.500.500.000.9210.97
B1.000.290.600.501.500.430.001.131.831.142.171.290.711.502.502.001.001.864.502.803.002.295.501.801.434.803.671.800.330.330.001.7320.75
C1.571.711.401.500.500.570.831.001.331.141.832.712.573.672.333.003.332.572.001.801.602.291.751.402.861.801.830.801.671.672.501.8622.24
D0.430.000.200.671.501.711.501.632.333.142.332.291.571.171.501.401.330.570.171.400.401.860.250.801.002.001.002.202.000.670.001.2615.08
E0.430.140.200.330.000.570.670.880.831.000.830.430.430.330.670.200.330.430.330.200.000.001.000.200.711.201.000.800.831.170.750.556.53
F0.000.000.000.000.330.000.000.000.170.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.020.19
G1.141.431.800.830.670.570.670.380.330.140.330.290.710.500.330.600.500.570.670.801.001.002.501.800.860.400.000.200.170.000.250.698.29
H0.000.000.200.330.330.140.000.000.000.000.000.140.000.000.000.200.170.710.170.000.000.000.000.000.000.000.000.000.000.000.000.080.93
I1.571.712.602.171.502.142.501.501.671.001.001.140.711.501.671.402.002.571.671.000.000.140.250.200.291.600.670.800.830.830.251.2515.03
x1.290.431.201.332.170.570.331.632.501.713.331.711.712.504.333.803.674.005.005.204.803.297.252.202.145.204.502.600.830.830.002.6531.72
r0.290.000.200.330.170.000.000.250.500.860.670.000.140.330.171.001.171.430.831.000.201.141.250.800.570.400.670.200.331.170.500.536.40
s2.291.432.801.001.172.002.001.001.501.141.171.712.002.832.001.801.832.432.502.601.001.000.501.002.292.601.331.601.331.171.251.6920.20
a1.713.143.204.001.671.571.671.882.001.001.332.711.001.832.332.002.672.431.171.601.802.713.501.801.862.801.502.002.831.001.002.0624.62
h0.000.000.000.000.330.000.000.250.000.571.000.860.290.000.170.200.170.000.000.000.000.000.250.000.000.000.000.000.000.000.250.141.67
k0.860.430.200.501.502.142.502.002.672.862.171.712.572.171.831.801.831.140.500.000.000.430.250.801.001.201.001.001.001.000.751.2815.39
x1.861.863.403.332.502.432.832.002.331.572.171.711.712.503.503.404.835.432.333.401.801.142.000.601.002.001.501.601.331.330.252.2526.92
o4.003.004.003.003.672.862.173.134.504.004.504.434.295.676.176.005.004.717.336.006.007.149.755.605.148.606.174.603.672.672.504.8558.07
i0.570.570.200.830.830.430.830.630.670.711.331.570.710.500.500.400.670.860.331.000.000.291.250.201.291.001.001.201.331.001.000.769.16
c0.000.000.000.000.000.570.671.251.671.861.671.001.001.000.670.800.830.430.000.000.000.000.000.200.430.600.330.000.000.170.000.495.85
CV93.8673.2991.4084.83123.50145.29158.17152.50189.83211.71204.00185.00175.71158.83152.67151.60156.83123.4384.0087.2052.4091.14119.7596.00117.57152.4099.33111.20109.1784.3372.00126.10100
CVn40.2923.7122.0017.3360.8381.2991.5090.50114.50133.43127.50137.86129.71100.0087.3397.8093.1763.4326.0029.8017.2038.0070.5060.6075.71106.0072.6784.6086.1767.3356.7574.3158.93
CVs53.5749.5769.4067.5062.6764.0066.6762.0075.3378.2976.5047.1446.0058.8365.3353.8063.6760.0058.0057.4035.2053.1449.2535.4041.8646.4026.6726.6023.0017.0015.2551.7941.07