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\begin{document}

\begin{table}[htbp]
\caption{Fast Hankel Transform} \label{FHT}
\begin{tabularx}{\linewidth}{|*{6}{C|}}
\hline
Order     & Abscissa of $J_0$    & Weight of $J_0$       & Order      & Abscissa of $J_1$    & Weight of $J_1$         \\\hline
1         & $-19.32$             & $9.63\times10^{-7}$   & 1          & $-18.21$             & $-6.77\times10^{-14}$   \\\hline
2         & $-19.11$             & $-5.02\times10^{-6}$  & 2          & $-18.01$             & $3.40\times10^{-13}$    \\\hline
3         & $-18.90$             & $1.25\times10^{-5}$   & 3          & $-17.81$             & $-7.43\times10^{-13}$   \\\hline
$\vdots$  & $\vdots$             & $\vdots$              & $\vdots$   & $\vdots$             & $\vdots$                \\\hline
118       & $5.04$               & $6.23\times10^{-6}$   & 118        & $5.49$               & $7.33\times10^{-6}$     \\\hline
119       & $5.25$               & $-1.12\times10^{-6}$  & 119        & $5.69$               & $-3.76\times10^{-6}$    \\\hline
120       & $5.46$               & $1.04\times10^{-7}$   & 120        & $5.89$               & $1.86\times10^{-6}$     \\\hline
\multicolumn{3}{|c|}             {\multirow{4}{*}{}}     & $\vdots$   & $\vdots$             & $\vdots$                \\
\cline{4-6}    \multicolumn{3}{|c|}{}                    & 138        & $9.54$               & $-1.36\times10^{-9}$    \\
\cline{4-6}    \multicolumn{3}{|c|}{}                    & 139        & $9.74$               & $3.53\times10^{-10}$    \\
\cline{4-6}    \multicolumn{3}{|c|}{}                    & 140        & $9.94$               & $-4.54\times10^{-11}$   \\ \hline
\end{tabularx}
\end{table}
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