Fig. 1. Histograms of speed and persistence times for real and simulated cells. (A) Underlying speeds from 272 real cell trajectories. Median is 0.76 µm/minute. (B) Persistence times from same trajectories as A. Median is 12.3 minutes. (C) Underlying speeds for 407 simulated cell trajectories. Median is 0.75 µm/minute. (D) Persistence times for same simulated trajectories as C. Median is 14.0 minutes. In all histograms, large outliers (less than 0.5% of the data) are not shown to better show the bulk of the data, however these outliers were not excluded from the median calculations.