Histograms of the distribution of state variables at two times. Histograms of the selected state variables were computed at t = 1000 and 3600 sec using the data from 1000 simulations. The left hand panels are the data at t = 1000 sec while the right hand panel is at t = 3600 sec. The x-axis is the number of molecules of each state variable and the y-axis is the probability of occupancy. These histograms were generated from data files generated by the 'Time Weighted Average' Tool in the BNS Toolbox.