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. 2020 Jul 16;140:110074. doi: 10.1016/j.chaos.2020.110074

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Fig. 2 — Dynamics of x(t) in the A-SIR model. We plot x(t) in upper plots (a1) and (b1); and I(t) (dashed curve) and J(t) (solid curve) in lower plots (a2) and (b2). These are considered along the solutions of the A-SIR model for $α = 1.13 * 10^{- 8},$ $β = 1 / 7,$ $η = 1 / 14,$ and $ξ = 1 / 10$ ; in the left column, i.e. in plots (a1) and (a2), with $S_{0} = 2 * 10^{7}$ and $I_{0} + J_{0} = 10$ ; in the right column, i.e. in plots (b1) and (b2), for $S_{0} = 6 * 10^{7}$ and $I_{0} + J_{0} = 30$ . The scale of plots (a2) and (b2) is chosen so that the maximum of J(t) is at level one.