| 方案 | 上限(m) | 下限(m) | 超2%标准风险率(%) | 超5%标准风险率(%) | 超10%标准风险率(%) | 
| 设计方案 | 144.5 | 144.5 | 2 | 5 | 10 | 
| 1 | 145.5 | 144.5 | 2 | 5 | 10 | 
| 2 | 147.5 | 144.5 | 2 | 5 | 10 | 
| 3 | 148.5 | 144.5 | 2.1577 | 5.5013 | 10.4438 | 
| 4 | 149.5 | 144.5 | 2.3386 | 5.8405 | 11.0612 | 
| 5 | 150.5 | 144.5 | 2.5596 | 6.1288 | 11.5837 |