| Sensor 2 (Ohms) | Mean | Standard deviation | Coefficient of variation (%) |
| 1 ml | 51,068 | 605 | 1.19 |
| 2 ml | 35,879 | 752 | 2.10 |
| 3 ml | 31,424 | 434 | 1.38 |
| 4 ml | 30,766 | 602 | 1.96 |
| 5 ml | 17,553 | 415 | 2.37 |
| 6 ml | 14,271 | 162 | 1.14 |