表 2. The γ pass rate and the limit value calculated based on SPC method after excluding out-of-control points for 40 plans.
40例计划剔除失控点后的γ通过率及基于SPC方法计算的限值
| 组别 | 均值(%) | 标准差(%) | 容差限值(%) | 干预限值(%) |
| 两野合成 | 99.74 | 0.30 | 98.98 | 98.81 |
| 顺时针弧 | 99.08 | 0.56 | 97.74 | 96.78 |
| 逆时针弧 | 99.45 | 0.39 | 98.62 | 97.99 |