| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing Data | 1 |
4.3%
|
| 1 | All months of the year | 16 |
69.6%
|
| 2 | Only specific months (seasonally) | 3 |
13%
|
| 3 | Occasionaly | 3 |
13%
|
| Sysmiss | 3977 |