Number of observations | Highest depth, cm | Lowest depth, cm | Average depth, cm | Remarks |
5 | 7 | 5 | 6.0 | The depth of placement varied due to different penetration of the skid |
5 | 8 | 6 | 7.0 | |
5 | 8 | 5 | 6.5 | |
5 | 7 | 5 | 6.0 | |
Average | 6.38 | |||
Standard deviation | 0.478 |