X-ray surface brightness profiles (XSB) of halos located in different cosmic web environments in increasing halo-mass bins from left to right. The fraction of central galaxies in each mass bin (and each LSE category) is shown in Table 1. The bottom panel shows the significance (see Eq. 2) of the difference in the XSB in a given cosmic environment with respect to the others (see text for details). The shaded regions around each curve correspond to the uncertainty in the mean profile obtained by bootstrapping.