| Value | Category | Cases | |
|---|---|---|---|
| 1 | annual | 1 |
0.1%
|
| 2 | day | 48 |
2.7%
|
| 3 | irreg | 22 |
1.2%
|
| 4 | mon | 99 |
5.6%
|
| 5 | season | 4 |
0.2%
|
| 6 | week | 5 |
0.3%
|
| Missing value | 1600 |
89.9%
|