Graticule spacing (s) | Second order derivative | Third order derivative | Fourth order derivative | |||
---|---|---|---|---|---|---|
Estimated depth (m) | Iteration number | Estimated depth (m) | Iteration number | Estimated depth (m) | Iteration number | |
2 | 69.39 | 35 | 28.31 | 12 | 71.07 | 27 |
3 | 66.46 | 24 | 30.95 | 11 | 66.82 | 21 |
4 | 63.07 | 19 | 47.55 | 12 | 63.86 | 17 |
5 | 62.59 | 15 | 49.66 | 11 | 63.51 | 15 |
Average depth (m) | 65.38 ± 3.18 | 39.12 ± 11.04 | 66.32 ± 3.5 |