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Range analysis and variance analysis of permeability coefficient (× 10-5 mm/s).
| Level | Factor A | Factor B | Factor C | Factor D |
|---|---|---|---|---|
| 1 | 9.07 | 8.88 | 12.54 | 11.04 |
| 2 | 8.79 | 8.79 | 10.48 | 10.57 |
| 3 | 9.14 | 8.76 | 8.71 | 8.79 |
| 4 | 9.39 | 9.58 | 7.18 | 7.87 |
| 5 | 8.94 | 9.32 | 6.40 | 7.06 |
| Range | 0.60 | 0.82 | 6.14 | 3.98 |
| Variance | 0.04 | 0.11 | 4.97 | 2.33 |
