Table 3.
Design of experiments for the central composite design (CCD) experimental setup.
| Input Parameters | Unit | Coded | Levels of variation | |
|---|---|---|---|---|
| Minimum value | Maximum value | |||
| Clay soil (clay) | % | A | 70 | 100 |
| Aeolian sand (sand) | % | B | 0 | 30 |
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