Open Access
Table 2.
Thresholds and used to define starting and ending dates of each cycle extremum for cycles 23, 24, and 25.
| Cycle extremum | Start | End |
|---|---|---|
| Minimum 23 | 1995-08-16 | 1997-06-19 |
| Maximum 23 | 2000-02-03 | 2002-10-08 |
| Minimum 24 | 2007-02-24 | 2009-12-05 |
| Maximum 24 | 2011-09-23 | 2015-02-11 |
| Minimum 25 | 2016-12-16 | 2021-04-04 |
| Maximum 25 | 2023-01-13 | 2024-07-16(a) |
Notes. (a)Maximum of cycle 25 is the current phase: we stopped the analysis on July 16th, 2024.
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