Table 3:
Values of different metrics that could be employed for selecting a constant sound speed value. The optimal value according to each metric is shown in bold.
| Metric | 1.485 | 1.49 | 1.495 | 1.50 | 1.505 | 1.51 |
|---|---|---|---|---|---|---|
| Sharpness ×103 | 2.55 | 3.65 | 4.00 | 3.04 | 2.65 | 2.60 |
| Cost | 58.9 | 32.7 | 22.2 | 33.0 | 55.7 | 78.3 |
| RMSE ×10−2 | 7.42 | 7.34 | 7.17 | 6.83 | 7.15 | 8.19 |