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The number of air entrainment events under different water conditions performed for particular heights of the tipping trough edge above the water surface
| Tipping trough height above the water surface | Fresh water | Fresh water with surfactant | Saline water (8.5 PSU) | Saline water with microbubbles |
|---|---|---|---|---|
| 0.02 m | 9 | - | 7 | 8 |
| 0.03 m | 9 | 7 | 7 | 7 |
| 0.04 m | - | 6 | 7 | 7 |
| 0.05 m | 9 | 6 | 9 | 8 |