| d (cm) | r (cm) | kTe (eV) | ni × 1010 (cm−3) |
| 3 | 2 | 7.96 | 1.32 |
| 4 | 8.29 | 1.14 | |
| 6 | 10.44 | 0.91 | |
| 8 | 9.34 | 1.01 | |
| 5 | 2 | 6.58 | 1.58 |
| 4 | 7.19 | 1.59 | |
| 6 | 7.65 | 1.62 | |
| 8 | 6.69 | 1.79 | |
| 7 | 2 | 7.48 | 1.20 |
| 4 | 7.67 | 1.32 | |
| 6 | 7.99 | 1.26 | |
| 8 | 7.33 | 1.24 |