\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*{1}{|r}|}
\hline
Assembly & genome.nextpolish \\ \hline
\# contigs ($\geq$ 0 bp) & 503 \\ \hline
\# contigs ($\geq$ 1000 bp) & 458 \\ \hline
\# contigs ($\geq$ 5000 bp) & 222 \\ \hline
\# contigs ($\geq$ 10000 bp) & 62 \\ \hline
\# contigs ($\geq$ 25000 bp) & 1 \\ \hline
\# contigs ($\geq$ 50000 bp) & 0 \\ \hline
Total length ($\geq$ 0 bp) & 2594127 \\ \hline
Total length ($\geq$ 1000 bp) & 2562284 \\ \hline
Total length ($\geq$ 5000 bp) & 1946505 \\ \hline
Total length ($\geq$ 10000 bp) & 840712 \\ \hline
Total length ($\geq$ 25000 bp) & 27619 \\ \hline
Total length ($\geq$ 50000 bp) & 0 \\ \hline
\# contigs & 503 \\ \hline
Largest contig & 27619 \\ \hline
Total length & 2594127 \\ \hline
GC (\%) & 54.13 \\ \hline
N50 & 7301 \\ \hline
N90 & 2515 \\ \hline
auN & 8523.4 \\ \hline
L50 & 117 \\ \hline
L90 & 326 \\ \hline
\# N's per 100 kbp & 0.00 \\ \hline
Complete BUSCO (\%) & 0.00 \\ \hline
Partial BUSCO (\%) & 0.00 \\ \hline
\# predicted rRNA genes & 18 + 0 part \\ \hline
\end{tabular}
\end{center}
\end{table}
\end{document}
