Table 2 Values of ${\mathit{P}}^{\mathbf{\ast }}$ , when fixing ${\mathit{\tau }}_{\mathbf{2}}\mathbf{=}\mathbf{0.1}$ and changing ${\mathit{\tau }}_{\mathbf{1}}$

${\mathit{M}}_{\mathbf{1}}^{\mathbf{\ast }}$

${\mathit{I}}_{\mathbf{1}}^{\mathbf{\ast }}$

${\mathit{R}}_{\mathbf{1}}^{\mathbf{\ast }}$

${\mathit{M}}_{\mathbf{2}}^{\mathbf{\ast }}$

${\mathit{I}}_{\mathbf{2}}^{\mathbf{\ast }}$

${\mathit{R}}_{\mathbf{2}}^{\mathbf{\ast }}$