| Drill core | Length (cm) | Effective sectional area (cm2) | Air permeability (md) |
| high-permeability drill core a-1 | 30.08 | 19.72 | 346 |
| high-permeability drill core a-2 | 30.09 | 19.80 | 325 |
| high-permeability drill core a-3 | 30.15 | 19.64 | 307 |
| low-permeability drill core b-1 | 30.17 | 19.71 | 50 |
| low-permeability drill core b-2 | 30.18 | 19.71 | 48 |
| low-permeability drill core b-3 | 30.20 | 19.76 | 52 |