Figure 6: Probability density functions (PDFs) of midge kinematics for Ob14.
From: Three-dimensional time-resolved trajectories from laboratory insect swarms

(a) PDF of speeds of individual midges. The PDF is smooth with no unusual features. The tail of the PDF is well-resolved. (b) PDF of acceleration magnitudes of individual midges. As with the velocity PDF, the acceleration statistics are smooth and have no unexpected features.