Influence of bottleneck on single-file pedestrian flow: Findings from two experiments
Jin Cheng-Jie1, 2, †, Jiang Rui3, Li Da-Wei1, 2
       

Statistics of time-headways in 3 runs of the second experiment, when X = 10 s, showing (a) averaged time-headways and (b) standard deviations of time-headways.