|  | Ovarian inactivity 1st winter | Ovarian inactivity 2nd winter | Ovarian inactivity 3rd winter | Mean duration (days) (2) (3) | |
---|---|---|---|---|---|---|
WF | Beginning | 21 Nov ± 12 | 31 Dec ± 10 | 14 Jan ± 25 |  | |
 | End | 22 March ± 17 | 28 March ± 12 | 26 April ± 23 |  | |
 | Duration (1) | 119 ± 37 (4/10) | 87 ± 17 (4/9)* | 103 ± 13 (3/9) | 103.0 | 40.4 |
R | Beginning | 21 Nov ± 11 | 22 Sep ± 10 | 27 Oct ± 4 |  | |
 | End | 21 May ± 7 | 15 May ± 6 | 21 May ± 4 |  | |
 | Duration (1) | 180 ± 15 (8/10) | 235 ± 13 (10/10) | 206 ± 7 (10/10) | 207.3 | 194.2 |
V | Beginning | 16 Nov ± 5 | 14 Nov ± 7 | 03 Nov ± 9 |  | |
 | End | 6 May ± 9 | 2 May ± 10 | 13 May ± 6 |  | |
 | Duration (1) | 171 ± 12 (8/10) | 169 ± 15 (8/10) | 193 ± 8 (8/10) | 178.0 | 141.0 |