Table 2 Average hardness values for control walls, standard errors included.
Hatches | Average hardness, HV1 (standard error) | ||
|---|---|---|---|
No control | Power control | Velocity control | |
3 | 254.4 (2.7) | 263.1 (2.6) | 265.5 (2.3) |
6 | 271.5 (1.5) | 268.5 (1.1) | 283.5 (1.4) |
10 | 274.0 (0.8) | 274.0 (0.8) | 274.4 (0.9) |
Combined | 271.3 (0.8) | 271.3 (0.7) | 276.2 (0.9) |
