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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 & 50324 & 51135 \\ \hline
meta\_ref\_2 & 59178 & 58431 \\ \hline
meta\_ref\_3 & 69110 & 63778 \\ \hline
not\_aligned & 2730 & 885 \\ \hline
\end{tabular}
\end{center}
\end{table}
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