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| State, si | Dose range |
|---|---|
| 1 | xi = 0% |
| 2 | 0 < xi ≤ 50% |
| 3 | 50% < xi < 100% |
| 4 | xi = 100% |
| 5 | 100 < xi ≤ 200% |
| 6 | 200 < xi ≤ 300% |
| 7 | xi > 300% |