Fig. 9.

Optimal parameters obtained in a procedure similar to that of Fig. 7, for $\mathbf{\theta }=\left(\beta ,,,,\omega ,,,,d_0,,,,d_1,,,,E,(0)\right)$. We also show the interval that includes the curves of $d_P(t)$, for each optimal value of $d_0$ and $d_1$ associated with the same run. In addition, we also show the optimal values of $d_P$ presented in Fig. 7, for purposes of comparison with the curves of $d_P(t)$