Case of WNM (f = 0.05, χ = 0.1): CR spectrum and ratio D/D₀ as a function of energy, where D₀(E) = 10²⁸(E/10 GeV)^0.5 cm² s⁻¹. The different colors refer to different ages in yr (as marked). Left panels: refer to a location at 50 pc from the center of the SNR, and right panels: refer to the shock position. In this case, the spectrum of CRs that are still confined in the accelerator is also shown (dashed lines).