Fig. 3. Range of walking speeds. The range of relative speeds, v/(gh)^0.5, is illustrated. v is velocity, g is the gravitational constant and h is hip height during quiet standing, adopted by each of the individuals in this study. Walking gaits were used at all speeds in this study. The male patas tended to use faster walking speeds than the other monkeys, while the male baboon (Papio) tended to move more slowly. The median speed for each individual is indicated in bold, the shaded box contains the interquartile range (IQR), and whiskers may extend to 1.5xIQR. Values beyond the whiskers (open circles) are outlying data points. Values of N are given below the box-and-whisker plot. F, female; M, male; A, adult; SA, subadult.