Statistics of sunspot activity
Solar activity in 1984
Visual indices of solar activity by National Geophysical Data Center
  | Average by |
monthIIIIII
IVVVI
VIIVIIIIX
XXIXIIdaysmonths | | | | | | | | | | | | | | |
N | 31 | 29 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30.51 | 30.51 |
W | 74.69 | 102.93 | 105.64 | 83.75 | 86.97 | 59.72 | 49.75 | 35.07 | 20.41 | 16.34 | 25.28 | 23.15 | 56.83 | 56.97 |
Wn | 36.01 | 40.43 | 33.17 | 20.33 | 27.76 | 15.81 | 17.87 | 14.84 | 8.96 | 9.82 | 8.56 | 7.86 | 20.08 | 20.12 |
Ws | 38.68 | 62.50 | 72.47 | 63.42 | 59.21 | 43.90 | 31.87 | 20.23 | 11.45 | 6.52 | 16.71 | 15.29 | 36.75 | 36.86 |
n | 3.76 | 4.92 | 6.34 | 3.50 | 3.74 | 3.67 | 3.66 | 2.01 | 1.36 | 1.09 | 1.61 | 1.65 | 3.11 | 3.11 |
A | 0.48 | 0.67 | 0.80 | 0.52 | 0.54 | 0.33 | 0.65 | 0.43 | 0.46 | 0.34 | 0.26 | 0.47 | 0.50 | 0.50 |
B | 0.50 | 0.50 | 0.96 | 0.43 | 0.52 | 0.80 | 0.68 | 0.28 | 0.34 | 0.31 | 0.39 | 0.46 | 0.51 | 0.51 |
C | 0.85 | 0.65 | 1.93 | 0.86 | 0.63 | 0.72 | 0.83 | 0.38 | 0.16 | 0.16 | 0.24 | 0.28 | 0.64 | 0.64 |
D | 0.86 | 1.50 | 1.34 | 0.73 | 0.50 | 0.42 | 0.66 | 0.54 | 0.28 | 0.08 | 0.36 | 0.36 | 0.63 | 0.64 |
E | 0.21 | 0.40 | 0.05 | 0.09 | 0.07 | 0.02 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 0.07 |
F | 0.01 | 0.15 | 0.13 | 0.35 | 0.58 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.10 |
G | 0.52 | 0.48 | 0.27 | 0.33 | 0.53 | 0.33 | 0.02 | 0.02 | 0.00 | 0.09 | 0.29 | 0.03 | 0.24 | 0.24 |
H | 0.07 | 0.05 | 0.07 | 0.02 | 0.01 | 0.21 | 0.03 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.04 | 0.04 |
I | 0.27 | 0.51 | 0.80 | 0.19 | 0.36 | 0.84 | 0.78 | 0.36 | 0.13 | 0.11 | 0.07 | 0.05 | 0.37 | 0.37 |
x | 0.98 | 1.18 | 1.76 | 0.95 | 1.06 | 1.13 | 1.33 | 0.70 | 0.79 | 0.64 | 0.66 | 0.93 | 1.01 | 1.01 |
r | 0.22 | 0.16 | 0.53 | 0.17 | 0.21 | 0.16 | 0.08 | 0.19 | 0.09 | 0.05 | 0.09 | 0.15 | 0.18 | 0.17 |
s | 0.88 | 1.09 | 2.22 | 0.84 | 0.80 | 1.03 | 1.41 | 0.47 | 0.17 | 0.14 | 0.29 | 0.27 | 0.80 | 0.80 |
a | 0.59 | 0.59 | 1.27 | 0.58 | 0.61 | 0.62 | 0.76 | 0.58 | 0.21 | 0.24 | 0.32 | 0.28 | 0.55 | 0.56 |
h | 0.31 | 0.41 | 0.28 | 0.18 | 0.22 | 0.50 | 0.07 | 0.05 | 0.00 | 0.01 | 0.15 | 0.01 | 0.18 | 0.18 |
k | 0.78 | 1.49 | 0.28 | 0.79 | 0.84 | 0.23 | 0.00 | 0.03 | 0.10 | 0.01 | 0.11 | 0.01 | 0.38 | 0.39 |
x | 0.82 | 1.23 | 1.67 | 0.73 | 0.91 | 1.37 | 1.47 | 0.78 | 0.59 | 0.45 | 0.34 | 0.52 | 0.91 | 0.91 |
o | 2.38 | 2.33 | 4.23 | 2.15 | 2.10 | 2.18 | 2.13 | 1.02 | 0.64 | 0.63 | 1.24 | 1.13 | 1.84 | 1.85 |
i | 0.44 | 1.17 | 0.43 | 0.60 | 0.69 | 0.12 | 0.06 | 0.18 | 0.12 | 0.00 | 0.03 | 0.01 | 0.32 | 0.32 |
c | 0.12 | 0.18 | 0.01 | 0.03 | 0.03 | 0.00 | 0.00 | 0.03 | 0.02 | 0.00 | 0.00 | 0.00 | 0.04 | 0.03 |
CV | 76.73 | 117.95 | 83.42 | 68.19 | 74.73 | 54.85 | 34.86 | 21.52 | 11.86 | 7.29 | 24.23 | 12.57 | 48.75 | 49.02 |
CVn | 38.88 | 51.46 | 25.62 | 21.78 | 23.09 | 12.30 | 11.30 | 7.06 | 3.23 | 5.71 | 5.92 | 4.15 | 17.43 | 17.54 |
CVs | 37.85 | 66.49 | 57.80 | 46.42 | 51.64 | 42.55 | 23.56 | 14.46 | 8.64 | 1.58 | 18.31 | 8.42 | 31.31 | 31.48 |
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