When using this data, please cite the original publication:

Additionally, you should cite the record:

@misc{hepdata.66893, author = "{CMSCollaboration} and {TOTEM Collaboration}", title = "{Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at $\sqrt{s}$ = 8 TeV by the CMS and TOTEM experiments}", howpublished = "{HEPData (collection)}", year = 2015, note = "\url{https://doi.org/10.17182/hepdata.66893}" }

or, if you prefer, a specific version of the record:

@misc{hepdata.66893.v1, author = "{CMSCollaboration} and {TOTEM Collaboration}", title = "{Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at $\sqrt{s}$ = 8 TeV by the CMS and TOTEM experiments (Version 1)}", howpublished = "{HEPData (collection)}", year = 2015, note = "\url{https://doi.org/10.17182/hepdata.66893.v1}" }

You can also cite this table directly.

@misc{hepdata.66893.v1/t1, author = "{CMSCollaboration} and {TOTEM Collaboration}", title = "{``Table 1'' of ``Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at $\sqrt{s}$ = 8 TeV by the CMS and TOTEM experiments'' (Version 1)}", howpublished = "{HEPData (dataset)}", year = 2015, note = "\url{https://doi.org/10.17182/hepdata.66893.v1/t1}" }