| Valor | Categoría | Casos | |
|---|---|---|---|
| 1 hora | 353 |
34.1%
|
|
| 2 horas | 238 |
23%
|
|
| 3 horas | 160 |
15.5%
|
|
| 4 horas | 99 |
9.6%
|
|
| 5 horas | 102 |
9.9%
|
|
| Mas horas | 83 |
8%
|