| Sample Location | Coordinates | |
| Latitude | Longitude | |
| SM1: Amakohia Market | 5˚30'51.4188"N | 7˚01'14.1744"E |
| SM2: Relief Market | 5˚28'50.0808"N | 7˚02'48.5484"E |
| SM3: Alaba Market | 5˚27'29.9448"N | 7˚02'34.1844"E |