Table 2:
Number of months that are found to be
significant in the activity excess of one hemisphere over the
other, separately for each solar cycle. The calculation was
performed on a 99%-level applying the Student's t-test given in
Eq. (3).
| Cycle |
fraction of |
months of excess |
| |
asymmetry |
per cycle |
| |
per cycle % |
North no. (%) |
South no. (%) |
| cycle 18 |
50 |
25 (25) |
25 (25) |
| cycle 19 |
58 |
69 (50) |
11 ( 8) |
| cycle 20 |
63 |
60 (43) |
28 (20) |
| cycle 21 |
50 |
30 (24) |
32 (26) |
| cycle 22 |
52 |
21 (18) |
40 (34) |
| cycle 23 |
47 |
17 (17) |
31 (30) |
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