Fig. 8From: Uncovering the internal structure of Boko Haram through its mobility patternsThe fraction of times that a cell crosses an international border depending on daily speed ν, and the distance between two events μ. With a speed of ν = 60 kilometres and a maximum distance of μ = 180 kilometres, Boko Haram cells cross a border 30% of the time between any two consecutive eventsBack to article page