Table 5.

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

${\mathit{R}}_{\mathbf{0}}$	1.0001	1.0009	1.0018	1.0027	1.0036
${\mathit{\alpha }}_{\mathbf{4}}$	1.3082	1.3081	1.3079	1.3078	1.3077
${\mathit{b}}_{\mathbf{31}}$	0.4604	0.4603	0.4602	0.4601	0.4600
${\mathit{b}}_{\mathbf{21}}$	0.0646	0.0646	0.0646	0.0645	0.0645
${\mathit{b}}_{\mathbf{11}}$	0.0036	0.0036	0.0036	0.0036	0.0036
${\mathit{\alpha }}_{\mathbf{0}}$	$-$ 3.1972e$-$08	$-$ 4.7898e$-$07	$-$ 9.2600e$-$07	$-$ 1.3730e$-$06	$-$ 1.8200e$-$06