Statistics of sunspot activity
March, 1990
Visual indices of solar activity by author's observations
Date | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | Average | % |
W |   |   |   |   | 66 |   |   |   |   | 55 |   | 88 |   |   |   | 130 |   |   |   |   |   | 195 |   |   | 206 | 162 | 161 | 153 |   | 120 | 100 | 130.55 | 100 |
Wn |   |   |   |   | 34 |   |   |   |   | 37 |   | 74 |   |   |   | 89 |   |   |   |   |   | 16 |   |   | 13 | 30 | 33 | 27 |   | 22 | 43 | 38.00 | 29.11 |
Ws |   |   |   |   | 32 |   |   |   |   | 18 |   | 14 |   |   |   | 41 |   |   |   |   |   | 179 |   |   | 193 | 132 | 128 | 126 |   | 98 | 57 | 92.55 | 70.89 |
n |   |   |   |   | 4 |   |   |   |   | 4 |   | 6 |   |   |   | 8 |   |   |   |   |   | 7 |   |   | 8 | 8 | 7 | 8 |   | 8 | 7 | 6.82 | 100 |
A |   |   |   |   | 0 |   |   |   |   | 0 |   | 0 |   |   |   | 2 |   |   |   |   |   | 0 |   |   | 2 | 1 | 0 | 0 |   | 0 | 0 | 0.45 | 6.67 |
B |   |   |   |   | 0 |   |   |   |   | 0 |   | 2 |   |   |   | 1 |   |   |   |   |   | 1 |   |   | 2 | 1 | 1 | 2 |   | 0 | 1 | 1.00 | 14.67 |
C |   |   |   |   | 1 |   |   |   |   | 3 |   | 1 |   |   |   | 1 |   |   |   |   |   | 0 |   |   | 1 | 3 | 2 | 2 |   | 1 | 1 | 1.45 | 21.33 |
D |   |   |   |   | 1 |   |   |   |   | 0 |   | 2 |   |   |   | 1 |   |   |   |   |   | 2 |   |   | 0 | 0 | 0 | 0 |   | 4 | 2 | 1.09 | 16.00 |
E |   |   |   |   | 0 |   |   |   |   | 0 |   | 0 |   |   |   | 1 |   |   |   |   |   | 2 |   |   | 1 | 0 | 0 | 0 |   | 0 | 1 | 0.45 | 6.67 |
F |   |   |   |   | 0 |   |   |   |   | 0 |   | 0 |   |   |   | 0 |   |   |   |   |   | 0 |   |   | 0 | 1 | 1 | 1 |   | 0 | 0 | 0.27 | 4.00 |
G |   |   |   |   | 0 |   |   |   |   | 0 |   | 0 |   |   |   | 0 |   |   |   |   |   | 1 |   |   | 2 | 1 | 1 | 0 |   | 0 | 0 | 0.45 | 6.67 |
H |   |   |   |   | 1 |   |   |   |   | 0 |   | 0 |   |   |   | 1 |   |   |   |   |   | 0 |   |   | 0 | 0 | 2 | 2 |   | 0 | 0 | 0.55 | 8.00 |
I |   |   |   |   | 1 |   |   |   |   | 1 |   | 1 |   |   |   | 1 |   |   |   |   |   | 1 |   |   | 0 | 1 | 0 | 1 |   | 3 | 2 | 1.09 | 16.00 |
x |   |   |   |   | 0 |   |   |   |   | 0 |   | 2 |   |   |   | 3 |   |   |   |   |   | 1 |   |   | 4 | 2 | 1 | 2 |   | 0 | 1 | 1.45 | 21.33 |
r |   |   |   |   | 0 |   |   |   |   | 0 |   | 0 |   |   |   | 0 |   |   |   |   |   | 1 |   |   | 0 | 0 | 0 | 0 |   | 0 | 0 | 0.09 | 1.33 |
s |   |   |   |   | 1 |   |   |   |   | 3 |   | 2 |   |   |   | 3 |   |   |   |   |   | 0 |   |   | 1 | 3 | 3 | 1 |   | 3 | 4 | 2.18 | 32.00 |
a |   |   |   |   | 2 |   |   |   |   | 0 |   | 2 |   |   |   | 2 |   |   |   |   |   | 3 |   |   | 2 | 0 | 0 | 3 |   | 5 | 1 | 1.82 | 26.67 |
h |   |   |   |   | 1 |   |   |   |   | 0 |   | 0 |   |   |   | 0 |   |   |   |   |   | 0 |   |   | 0 | 0 | 0 | 0 |   | 0 | 0 | 0.09 | 1.33 |
k |   |   |   |   | 0 |   |   |   |   | 1 |   | 0 |   |   |   | 0 |   |   |   |   |   | 2 |   |   | 1 | 3 | 3 | 2 |   | 0 | 1 | 1.18 | 17.33 |
x |   |   |   |   | 2 |   |   |   |   | 1 |   | 1 |   |   |   | 4 |   |   |   |   |   | 1 |   |   | 2 | 2 | 2 | 3 |   | 3 | 2 | 2.09 | 30.67 |
o |   |   |   |   | 1 |   |   |   |   | 2 |   | 3 |   |   |   | 1 |   |   |   |   |   | 2 |   |   | 4 | 5 | 3 | 3 |   | 3 | 4 | 2.82 | 41.33 |
i |   |   |   |   | 1 |   |   |   |   | 1 |   | 2 |   |   |   | 3 |   |   |   |   |   | 4 |   |   | 1 | 0 | 1 | 2 |   | 2 | 1 | 1.64 | 24.00 |
c |   |   |   |   | 0 |   |   |   |   | 0 |   | 0 |   |   |   | 0 |   |   |   |   |   | 0 |   |   | 1 | 1 | 1 | 0 |   | 0 | 0 | 0.27 | 4.00 |
CV |   |   |   |   | 75 |   |   |   |   | 71 |   | 65 |   |   |   | 79 |   |   |   |   |   | 162 |   |   | 115 | 185 | 186 | 123 |   | 126 | 124 | 119.18 | 100 |
CVn |   |   |   |   | 16 |   |   |   |   | 32 |   | 51 |   |   |   | 55 |   |   |   |   |   | 3 |   |   | 11 | 13 | 13 | 10 |   | 20 | 59 | 25.73 | 21.59 |
CVs |   |   |   |   | 59 |   |   |   |   | 39 |   | 14 |   |   |   | 24 |   |   |   |   |   | 159 |   |   | 104 | 172 | 173 | 113 |   | 106 | 65 | 93.45 | 78.41 |
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