| Value | Category | Cases | |
|---|---|---|---|
| 1 | annual | 2 |
0.1%
|
| 2 | day | 2 |
0.1%
|
| 3 | irreg | 349 |
19.6%
|
| 4 | mon | 61 |
3.4%
|
| 5 | season | 142 |
8%
|
| 6 | week | 38 |
2.1%
|
| Missing value | 1185 |
66.6%
|