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| Sample | NVPF-1 | NVPF-2 | NVPF-3 |
|---|---|---|---|
| E A1 (V) | 3.455 | 3.455 | 3.497 |
| E A2 (V) | 3.750 | 3.748 | 3.757 |
| E A3 (V) | 4.235 | 4.225 | 4.236 |
| E C1 (V) | 3.177 | 3.202 | 3.151 |
| E C2 (V) | 3.589 | 3.605 | 3.574 |
| E C3 (V) | 4.125 | 4.117 | 4.090 |
| ΔEA1–C1 (V) | 0.278 | 0.253 | 0.346 |
| ΔEA2–C2 (V) | 0.161 | 0.143 | 0.183 |
| ΔEA3–C3 (V) | 0.110 | 0.108 | 0.146 |
