Scattered radiation measured at various distances using Unfors Xi Survey Meter
| Distance from centre of PMMA (cm) | Scattered radiation measured in μGy | Equivalent hours of background radiation (using natural background radiation of 3 mSv/year) |
| 30 | 0.227 | 0.663 |
| 50 | 0.106 | 0.309 |
| 100 | 0.029 | 0.085 |
| 200 | 0.007 | 0.020 |
PMMA, polymethylmethacrylate.