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The two highest values for standard deviations (SD) of total lengths of each cement portion and distances to border of the total cement unit as rated among all 36 beam directions under consideration of all specimens, with designation of associated beam directions.
| Injected cement | SD (mm) | Beam direction (°) |
|---|---|---|
| First portion | 1.92 | 70 |
| 1.68 | 350 | |
| Second portion | 3.32 | 120 |
| 3.72 | 250 | |
| Third portion | 2.25 | 150 |
| 2.20 | 240 | |
| Fourth portion | 2.70 | 120 |
| 3.40 | 240 | |
| Total unit | 2.27 | 10 |
| 2.88 | 250 |
