| Value | Category | Cases | |
|---|---|---|---|
| 1 | annual | 3 |
0.2%
|
| 2 | day | 3 |
0.2%
|
| 3 | irreg | 22 |
1.2%
|
| 4 | mon | 44 |
2.5%
|
| 5 | season | 52 |
2.9%
|
| 6 | week | 8 |
0.4%
|
| Missing value | 1647 |
92.6%
|