| 时间t/min | Ea/mV | 时间t/min | Ea/mV |
| 0 | −360 | 10 | +530 |
| 2 | −145 | 15 | +538 |
| 4 | +115 | 20 | +545 |
| 6 | +380 | 25 | +548 |
| 8 | +505 | 30 | +556 |