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\begin{document}
\begin{tabular} {c  c   c  c}
& $p$-value\xspace (\%) ( $\chi^2/\mathrm{ndf}$ \xspace) & $p$-value\xspace (\%) ( $\chi^2/\mathrm{ndf}$ \xspace) & $p$-value\xspace (\%) ( $\chi^2/\mathrm{ndf}$ \xspace) \\
Bins & Magnet down & Magnet up & Combined sample \\ 
\hline
16 & 80.8 (10.2/15) & 21.2 (19.1/15) & 34.8 (16.5/15)\\
128  &  62.0 (121.5/127) &  75.9 (115.5/127) &  80.0 (113.4/127) \\
1024  &  27.5 (1049.6/1023) &  9.9 (1081.6/1023) &  22.1 (1057.5/1023) \\
\end{tabular}   
\end{document}
