| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing Data | 1 |
10%
|
| 1 | All months of the year | 2 |
20%
|
| 2 | Only specific months (seasonally) | 1 |
10%
|
| 3 | Occasionaly | 6 |
60%
|
| Sysmiss | 3990 |