| Value | Category | Cases | |
|---|---|---|---|
| 1 | annual | 2 |
0.1%
|
| 2 | day | 11 |
0.6%
|
| 3 | irreg | 33 |
1.9%
|
| 4 | mon | 86 |
4.8%
|
| 5 | season | 6 |
0.3%
|
| 6 | week | 3 |
0.2%
|
| Missing value | 1638 |
92.1%
|