| d | |||||||
Oxidation | Reduction | |||||||
| 5 mm | 10 mm | 15 mm | 5 mm | 10 mm | 15 mm | ||
Regions | I | 0.88 | 0.88 | 0.84 | 0.79 | 0.69 | 0.69 | |
II | 0 | 0 | 0 | 0 | 0 | 0 | ||
III | 0.88 | 0.88 | 0.84 | 0.79 | 0.69 | 0.69 | ||