| Atwood number | RT instability front | RM instability front | ||
| t/T = 2 | t/T = 3 | t/T = 2 | t/T = 3 | |
| 5 × 10−2 | 1.12 | 1.34 | 1.30 | 1.40 |
| 10−2 | 1.20 | 1.46 | 1.27 | 1.52 |