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\begin{table}[ht]
\begin{center}
\caption{All statistics are based on contigs of size $\geq$ 500 bp, unless otherwise noted (e.g., "\# contigs ($\geq$ 0 bp)" and "Total length ($\geq$ 0 bp)" include all contigs).}
\begin{tabular}{|l*{2}{|r}|}
\hline
Assemblies & meta\_contigs\_1 & meta\_contigs\_2 \\ \hline
meta\_ref\_1 & 50372 & 50372 \\ \hline
meta\_ref\_2 & 58663 & 58868 \\ \hline
meta\_ref\_3 & 69110 & 63015 \\ \hline
\end{tabular}
\end{center}
\end{table}
\end{document}
