Time evolution of the polarization as a function of the viewing angle. Each one of the four subplots of this plot probes a specific simulation setup, which is those discussed in Figs. 4 and 5. s1 and s2 (of Fig. 4) are in the top left and right panels respectively while s3 and s4 (of Fig. 5) are in the bottom left and right panels respectively. The different colors represent a time snapshot of this specific simulation, with green being the (already presented) t = t_mind, orange being the t = t_min+25d and black being the t = t_min+50d. In general, we do observe a change of polarization with time and the time evolution from t_min seems to favor higher maximum P values. However, it could result in lower observed P values for observers at specific viewing angles.