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Coded values and independent variables of the response surface experiment.
| No | X1 | X2 | X3 | ACE Inhibition (%) |
|---|---|---|---|---|
| 1 | −1 | −1 | 0 | 50.43 |
| 2 | 1 | −1 | 0 | 62.61 |
| 3 | −1 | 1 | 0 | 55.36 |
| 4 | 1 | 1 | 0 | 54.78 |
| 5 | −1 | 0 | −1 | 56.23 |
| 6 | 1 | 0 | −1 | 57.39 |
| 7 | −1 | 0 | 1 | 52.61 |
| 8 | 1 | 0 | 1 | 63.91 |
| 9 | 0 | −1 | −1 | 60.58 |
| 10 | 0 | 1 | −1 | 59.42 |
| 11 | 0 | −1 | 1 | 60.00 |
| 12 | 0 | 1 | 1 | 59.13 |
| 13 | 0 | 0 | 0 | 61.74 |
| 14 | 0 | 0 | 0 | 61.74 |
| 15 | 0 | 0 | 0 | 63.04 |
| 16 | 0 | 0 | 0 | 63.48 |
| 17 | 0 | 0 | 0 | 63.48 |
