When using this data, please cite the original publication:

Additionally, you should cite the record:

@misc{hepdata.74701, author = "{ATLAS Collaboration}", title = "{Measurement of $W$ boson angular distributions in events with high transverse momentum jets at $\sqrt{s}=$ 8 TeV using the ATLAS detector}", howpublished = "{HEPData (collection)}", year = 2016, note = "\url{https://doi.org/10.17182/hepdata.74701}" }

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

@misc{hepdata.74701.v1, author = "{ATLAS Collaboration}", title = "{Measurement of $W$ boson angular distributions in events with high transverse momentum jets at $\sqrt{s}=$ 8 TeV using the ATLAS detector (Version 1)}", howpublished = "{HEPData (collection)}", year = 2016, note = "\url{https://doi.org/10.17182/hepdata.74701.v1}" }

You can also cite this table directly.

@misc{hepdata.74701.v1/t3, author = "{ATLAS Collaboration}", title = "{``Table 3'' of ``Measurement of $W$ boson angular distributions in events with high transverse momentum jets at $\sqrt{s}=$ 8 TeV using the ATLAS detector'' (Version 1)}", howpublished = "{HEPData (dataset)}", year = 2016, note = "\url{https://doi.org/10.17182/hepdata.74701.v1/t3}" }