Average difference ($\overline{D}$) between models and observations over model time (x-axis) and model density (y-axis) for the seven objects except the last panel which is for the determined best values for the objects. The colors and contours are for static models with and without PAHs, respectively. The contours with levels of ${\overline{D}}_{\text{min}}$ (value labeled) to 2.0 by a step of 0.1. A cutoff of $\overline{D}$ = 2.0 is applied. In the first seven panels, the empty circle and triangle indicate the best values from the models with and without PAHs respectively. In the last panel, the determined best values for PGCCs are also shown with unfilled black squares (without PAHs) and cyan circles (with PAHs) which were adopted from Fig. B.2. The black, cyan and red lines are linear fits in log-log space for the fit data without PAHs, with PAHs and the combined one of the former two, respectively.