| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing Data | 1 |
1.7%
|
| 1 | All months of the year | 51 |
85%
|
| 2 | Only specific months (seasonally) | 5 |
8.3%
|
| 3 | Occasionaly | 3 |
5%
|
| Sysmiss | 3940 |