the simulation box of width 5.3 $h^{-1}$Mpc can be seen in Fig. \[fig:boxslice\], where the blue lines denote the inferred filament spines. Most of the structures in the box are traced well by the Bisous filaments.\
The Bisous model code only provides the three-dimensional positions of the points defining the filament spine. Along the spine in the simulation, the width of a filament can vary. However, when dealing with observations, this information from the underlying density field is not available and so an assumption for the width needs to be made a priori. In this case we assume the filaments to have a radius of 0.5 $h^{-1}$Mpc, as was used in @art:tempel14, and mask all the cells that are at a distance greater than this radius away from the filament points to extract the cells in filaments. The signal of the complete filament is then given by the mean of all the cells that fall within the filament radius. Choosing a slightly smaller radius (i.e., 0.25 $h^{-1}$Mpc) did not significantly affect our mean signal estimates, but it gives more scatter in the signal, since some of the inferred spines can be misaligned with parts of the underlying density field. A 