Each positions file contains xyz data from 10 snapshot of the simulations used to make the images in fig2. One of these is the was used to generate the image. Each line of the file is one cofiguration, formatted as N,X1,Y1,Z1,X2,Y2,Z2....XN,YN,ZN. where N is the number of particles.  
The Neighbours files contain the number of neighbour of each particle in the relevent snapshot. Format of neighbour data: N,N0,N1...NN
