| Value | Category | Cases | |
|---|---|---|---|
| 1 | annual | 2 |
0.1%
|
| 2 | day | 2 |
0.1%
|
| 3 | irreg | 9 |
0.5%
|
| 4 | mon | 11 |
0.6%
|
| 5 | season | 25 |
1.4%
|
| 6 | week | 5 |
0.3%
|
| Missing value | 1725 |
97%
|