Number of Histories Required to Achieve Convergence of Survival Curves
| Electron energy (keV) | No. of histories (×106) | Dself (Gy) | Dcross (Gy) | DN (Gy)* |
| 10 | 1,000 | 4.58 | 0.00 | 4.58 |
| 30 | 300 | 0.62 | 0.56 | 1.18 |
| 100 | 300 | 0.21 | 2.45 | 2.66 |
| 300 | 100 | 0.04 | 1.53 | 1.57 |
| 1,000 | 100 | 0.03 | 0.93 | 0.96 |
↵* Mean absorbed dose to cell nucleus obtained from sum of self- and cross-doses.