Table 4.

Values of the first column of the Routh table when $R_0<1$.

${\mathit{R}}_{\mathbf{0}}$	0.9957	0.9966	0.9974	0.9983	0.9992
${\mathit{\alpha }}_{\mathbf{4}}$	1.3087	1.3086	1.3085	1.3084	1.3083
${\mathit{b}}_{\mathbf{31}}$	0.4609	0.4608	0.4607	0.4606	0.4605
${\mathit{b}}_{\mathbf{21}}$	0.0648	0.0648	0.0647	0.0647	0.0646
${\mathit{b}}_{\mathbf{11}}$	0.0036	0.0036	0.0036	0.0036	0.0036
${\mathit{\alpha }}_{\mathbf{0}}$	2.2031e$-$06	1.7561e$-$06	1.3091e$-$06	8.6205e$-$07	4.1504e$-$07