When the suspensions are brought back to atmospheric pressure, the bodies are subject to a bouyancy force that moves the GAS Filter keystones upwards. Such displacements are shown below.
- Venting began on Thursday 22nd of October in the morning.
- Venting finished on Monday 26th of October just before 12 o'clock.
- The temperature remained constant throughout the process.
The values below are particularly important for BS and SR3, whose ballast masses will be adjusted soon.
Beam splitter
| BS GAS Filter | Initial (µm) | Final (µm) | Buoyancy effect (µm) |
| F0 | 122 | 1374 | 1,252 |
| F1 | 356 | 568 | 212 |
| BF | -7.4 | 356 | 363 |
| Temperature | 23.6 °C | 23.6 °C |
SR2 suspension
| SR2 GAS Filter | Initial (µm) | Final (µm) | Buoyancy effect (µm) |
| F0 | -1070 | -888 | 182 |
| F1 | 33 | 834 | 801 |
| BF | 19 | 336 | 317 |
| Temperature | 23.8 °C | 23.8 °C |
SR3 suspension
| SR3 GAS Filter | Initial (µm) | Final (µm) | Buoyancy effect (µm) |
| F0 | -799 | -511 | 288 |
| F1 | -417 | 44 | 461 |
| BF | -211 | 100 | 311 |
| Temperature | 23.3 °C | 23.3 °C |
SRM suspension
| SRM GAS Filter | Initial (µm) | Final (µm) | Buoyancy effect (µm) |
| F0 | -1,596 | -1,466 | 130 |
| F1 | -67 | 349 | 416 |
| BF | 119 | 454 | 335 |
| Temperature | 23.0 °C | 23.0 °C |
