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 | 294.73 | 45 | 329.90 | 25 | 264.83 | 29 |
3 | 327.41 | 34 | 239.45 | 18 | 317.79 | 26 |
4 | 326.89 | 27 | 307.93 | 18 | 299.40 | 22 |
5 | 329.05 | 23 | 274.93 | 18 | 296.40 | 19 |
Average depth (m) | 319.52 ± 16.55 | 288.05 ± 39.50 | 294.61 ± 21.99 |