| Zones lines | Mann-Whitney U test | |||
| n | Mean Rank | U | Sig. Bill (p-value) | |
| West South | 12 12 | 15.08 9.92 | 41.0 | 0.073 |
| East South | 12 12 | 12.38 12.42 | 71.0 | 0.954 |
| West East | 12 12 | 16.00 9.00 | 30.0 | 0.015* |