\begin{table}%T1
      \caption{Conditions at the base of an open magnetic flux and flux geometry.}
         \label{tab1}
 $$
         \begin{array}{p{0.75\linewidth} l}
            \hline\hline
            Temperature ($T_{\rm e}=T_{\rm p}=T_\alpha$) & 6 \times 10^4~ {\rm K} \\
        Alpha particle abundance ($n_\alpha/n_{\rm p}$) & 0.06 \\
        Electron density ($10^9 \mbox{ cm}^{-3}$)  & 3.8  \\
        Wave amplitude ($\delta V$)     & 21 \mbox{ km s}^{-1} \\
                               $r_1$    &1.004~R_{\rm S} \\
                       $\sigma_1$ & 0.005~R_{\rm S} \\
        Area expansion factor ($f_{\rm m2}$)   & 7  \\
        $r_2$  & 1.31~R_{\rm S}  \\
        $\sigma_2$ & 0.51~R_{\rm S}  \\
  Low frequency bound ($f_{\rm L}$) & 10^{-2} \mbox{ Hz}\\
%\noalign{\smallskip}
            \hline
         \end{array}
$$
   \end{table}