| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Calendar | 1939 |
97.3%
|
| 2 | Body temperature | 7 |
0.4%
|
| 3 | Cervical mucus | 25 |
1.3%
|
| 4 | Body temp. & mucus | 9 |
0.5%
|
| 5 | Other | 13 |
0.7%
|