Temporal evolution of the (a) M_A, (b) M_fm, (c) compression ratio, and (d) θ_BN obtained in the shock wave modeling. The resultant time-varying distribution characteristics (mean, median, and first/third quartile and decile values) of the shock parameters are also plotted in each panel. The mean is depicted with the blue lines, the median with black lines, the first/third quartile with the red shaded area, and the decile values are shown with the vertical bars. In panel (a) we also show the time history of the soft X-ray flux (green line), and in panel (d) we show the fraction of closed or open field lines to the total number of field lines connected to the shock surface.