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\begin{document}
\begin{tabular}{lrrr}
Dataset & $\epsilon_{\rm tag} \,(\%)$ & $\mathcal{D} \,(\%)$ & $\epsilon \mathcal{D}^2 \,(\%)$ \\ \hline
2011 OS& $12.3\pm1.0$ & $31.6\pm0.2$ & $1.23\pm0.10$ \\
2012 OS& $14.5\pm0.7$ & $32.7\pm0.3$ & $1.55\pm0.08$ \\\hline
2011 SSK& $40.2\pm1.4$ & $15.2\pm2.0$ & $0.93\pm0.25$ \\
2012 SSK& $33.1\pm0.9$ & $16.0\pm1.6$ & $0.85\pm0.17$ \\\hline
2011 Both& $26.0\pm1.3$ & $34.9\pm1.1$ & $3.17\pm0.26$ \\
2012 Both& $27.5\pm0.9$ & $33.2\pm1.2$ & $3.04\pm0.24$ \\
\end{tabular}
\end{document}
