S/N | Location of collection centers | Number of scrap center sampled | Number of questionnaire administered |
1 | Choba | 3 | 36 |
2 | Rumuokoro | 3 | 36 |
3 | Rumuodumaya | 3 | 36 |
4 | Eliozu | 3 | 36 |
5 | Rumuolumeni | 3 | 36 |
Total | 15 | 180 |