\documentclass[12pt,a4paper]{article}
\begin{document}
\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
Assembly & scaffolds & scaffolds\_broken \\ \hline
\# contigs ($\geq$ 0 bp) & 93693 & - \\ \hline
\# contigs ($\geq$ 1000 bp) & 57108 & 58720 \\ \hline
\# contigs ($\geq$ 5000 bp) & 5292 & 5150 \\ \hline
\# contigs ($\geq$ 10000 bp) & 2054 & 2037 \\ \hline
\# contigs ($\geq$ 25000 bp) & 692 & 667 \\ \hline
\# contigs ($\geq$ 50000 bp) & 252 & 246 \\ \hline
Total length ($\geq$ 0 bp) & {\bf 202739672} & - \\ \hline
Total length ($\geq$ 1000 bp) & {\bf 181774947} & 180553208 \\ \hline
Total length ($\geq$ 5000 bp) & {\bf 81738573} & 78868662 \\ \hline
Total length ($\geq$ 10000 bp) & {\bf 59899771} & 57838073 \\ \hline
Total length ($\geq$ 25000 bp) & {\bf 38927266} & 36793179 \\ \hline
Total length ($\geq$ 50000 bp) & {\bf 23747597} & 22294184 \\ \hline
\# contigs & 79558 & 82508 \\ \hline
Largest contig & {\bf 1033061} & 993982 \\ \hline
Total length & {\bf 201162385} & 201101205 \\ \hline
GC (\%) & 56.26 & 56.26 \\ \hline
N50 & {\bf 3404} & 3199 \\ \hline
N75 & {\bf 1589} & 1517 \\ \hline
L50 & {\bf 9959} & 10718 \\ \hline
L75 & {\bf 32287} & 34326 \\ \hline
\# N's per 100 kbp & 28.67 & {\bf 0.00} \\ \hline
\end{tabular}
\end{center}
\end{table}
\end{document}
