| Table Head | Difference in means between periods | SD | Sig. K.Wallis | ||||
| West | South | East | West | South | East | P value | |
| 2019/06-2019/12 vs 2020/06-2020/12 | 40.76 (decrease | 37.81 (decrease) | 33.01 (decrease) | 5.54 | 3.24 | 4.37 | 0.043* |