Open Access
Table 1
SC characteristics namely start time, peak time, ascent time, descent time, length, peak sunspot number, and minimum sunspot number are given for SCs 21–24. Version-2 series of international sunspot number is used to obtain these characteristics.
| SC No. | Start time, ts (yr) | Peak time, tp (yr) | Ascent, time Ta (yr) | Descent time, Td (yr) | Length, Tcy (yr) | S min | S max |
|---|---|---|---|---|---|---|---|
| 21 | 1976.21 | 1979.96 | 3.75 | 6.75 | 10.50 | 17.80 | 232.90 |
| 22 | 1986.71 | 1989.87 | 3.17 | 6.50 | 9.67 | 13.50 | 212.50 |
| 23 | 1996.37 | 2001.87 | 5.50 | 7.08 | 12.59 | 11.20 | 180.30 |
| 24 | 2008.96 | 2014.29 | 5.33 | – | – | 2.20 | 116.40 |
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