Case II: evacuation processes of a single trial with different panic parameters: (a1)–(a4) low panic level (0.3), (b1)–(b4) high panic level (0.7) at different time steps: (a1) and (b1) step = 0, (a2) and (b2) step = 200, (a3) and (b3) step = 400, and (a4) and (b4) step = 600. The initial number of pedestrians in the waiting hall is 600 in each trial. Here, P_in donates the number of pedestrians left in the waiting hall and P_out donates the number of pedestrians who escaped from the waiting hall at the specific time step.