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The coefficient parameters for the regression models.
| Model | α1 | α2 | α3 | α4 | α5 | α6 | Ε |
|---|---|---|---|---|---|---|---|
| Exponential | 20.7 | 0.047 | – | – | – | – | – |
| Quadratic | −338.346 | 3.0618 | – | – | – | – | 6282.77 |
| Third | 291.506 | −6.310 | 0.0376 | – | – | – | −2924.12 |
| Fourth | −164.741 | 5.887 | −0.076 | 0.0003 | – | – | 1092.87 |
| Fifth | 89.329 | −4.558 | 0.0898 | −0.0008 | 2.705e-06 | – | −421.90 |
| Sixth | −8.533 | 1.170 | −0.047 | 0.0008 | −5.44e-06 | 1.64e-08 | 0.559 |
