| S/N | Site A | Site B | Site C |
| 1 | 300 | 375 | 350 |
| 2 | 325 | 375 | 350 |
| 3 | 300 | 400 | 375 |
| 4 | 325 | 425 | 350 |
| 5 | 300 | 400 | 325 |
| 6 | 350 | 375 | 350 |
| 7 | 300 | 350 | 350 |
| 8 | 300 | 425 | 350 |
| 9 | 325 | 400 | 350 |
| 10 | 325 | 350 | 375 |
| 11 | 300 | 375 | 375 |
| 12 | 325 | 375 | 325 |
| 13 | 325 | 375 | 350 |
| 14 | 300 | 325 | 350 |
| 15 | 300 | 400 | 350 |
| 16 | 350 | 350 | 350 |
| 17 | 350 | 400 | 350 |
| 18 | 300 | 400 | 325 |
| 19 | 300 | 400 | 375 |
| 20 | 325 | 425 | 375 |
| Mean x̅ | 316.25 ± 18A | 390 ± 23B | 352.5 ± 15C |