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| Field size (cm2) | ||||||
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| 05 × 05 | 10 × 10 | 15 × 15 | 20 × 20 | 25 × 25 | 30 × 30 | 35 × 35 |
| No. of Histories from original source | 1010 | 1010 | 1010 | 1010 | 1010 | 1010 | 1010 |
| Histories simulated from phase space | 2.5 × 109 | 2.9 × 109 | 4 × 109 | 4 × 109 | 4.5 × 109 | 5 × 109 | 5 × 109 |
| Calculation time (hrs) | 51.39 | 49.1 | 65.03 | 65.03 | 86.5 | 102.92 | 100.7 |
| Size (MB) of file |
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| .3ddose | 892.7 | 396.7 | 396.7 | 396.7 | 396.7 | 892.7 | 892.7 |
| .egsdat | 909.8 | 404.4 | 404.4 | 404.4 | 404.4 | 909.8 | 909.8 |
| Accuracy in dose calculation |
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| z = 1(surface) | 1.5% | 0.9% | 1.3% | 1.3% | 1.8% | 1.7% | 1.8% |
| z = 200 (40 cm) | 3.9% | 3.0% | 3.5% | 4.2% | 4.5% | 5.2% | 5.4% |