The costs for initial electron energies 100 eV, 1 keV and 10 keV were calculated for air at ~120 km (mixture of 70% N2, 10% O2 and 20% O).
| # | State | Threshold, eV | Eo=100eV | Eo=1keV | Eo=10keV | Plot for Eo<50eV | With e-e collisions |
|---|---|---|---|---|---|---|---|
| 1 |
| 11.05 | 295.5 | 393 | 416.5 | ||
| 2 |
| 12.36 | 1438 | 1970 | 2111 | ||
| 3 |
| 12.87 | 1360 | 1889 | 2035 | ||
| 4 |
| 13.99 | 512.8 | 751.5 | 826.2 | ||
| 5 |
| 1.9 | 4.952 | 5.645 | 5.672 | ||
| 6 |
| 4.17 | 244.9 | 283.9 | 282.9 | ||
| 7 |
| 9.21 | 1545 | 1880 | 1877 | ||
| 8 |
| 11.81 | 17430 | 21760 | 22250 | ||
| 9 |
| 12.64 | 24220 | 31150 | 31910 | ||
| 10 |
| 10.76 | 1745 | 2175 | 2220 | ||
| 11 |
| 12.26 | 8328 | 10670 | 10930 | ||
| 12 |
| 12.83 | 8704 | 11420 | 11730 | ||
| 13 |
| 12.08 | 80120 | 110500 | 113600 | ||
| 14 |
| 12.75 | 214300 | 303000 | 312000 | ||
| 15 |
| 13.05 | 153200 | 220800 | 227600 | ||
| 16 |
| 12.79 | 3089 | 4601 | 4754 | ||
| 17 |
| 9.53 | 322.6 | 387.3 | 409.6 | ||
| 18 |
| 11.91 | 2189 | 2536 | 2703 | ||
| 19 |
| 12.68 | 2669 | 3042 | 3255 | ||
| 20 |
| 12.08 | 1021 | 1288 | 1376 | ||
| 21 |
| 12.75 | 1272 | 1625 | 1731 | ||
| 22 |
| 13.05 | 865.4 | 1101 | 1174 | ||
| 23 |
| 12.65 | 325.3 | 376.1 | 396.1 | ||
| 24 |
| 13.6 | 94.21 | 82.39 | 82.38 | ||
| 25 |
| 16.9 | 105.9 | 88.73 | 88.54 | ||
| 26 |
| 18.5 | 221.1 | 181.9 | 181.4 |