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Significant difference in conductivity between various Thi-vex concentrated groups. A significant difference was indicated with O and an insignificant difference was indicated with x.
| σ | 0% | 0.5% | 1.0% | 2.0% |
|---|---|---|---|---|
| 0% | x | x | x | O |
| 0.5% | x | x | x | x |
| 1.0% | x | x | x | x |
| 2.0% | O | x | x | x |
