\begin{table}%t2
%\centering
\par
  \caption{Value of the orbital frequencies at the parametric
    resonance radii for the first five orders~$n$ in the case of a
    Newtonian gravitational potential.  The results are given for
    a~$1.4~{M_\odot}$ neutron star rotating  at~$300$
    and~$600~{\rm Hz}$ respectively. The value to the left of the symbol~/ corresponds
    to the absolute value sign taken to be~$-$ and on the right to
    be~$+$. The --- sign indicates that no resonance condition can be satisfied. }
  \label{tab:ResPara}
  %\centering
\par
  \begin{tabular}{c c c}
    \hline
    \hline
    rank $n$ & \multicolumn{2}{c}{Orbital frequency $\nu(r,a_*)~{\rm (Hz)}$} \\
        & $\nu_*=600~{\rm Hz}$ & $\nu_*=300~{\rm Hz}$ \\
        \hline
    1 & --600 / 200 & --300 / 100 \\
    2 & --- / 300 & --- / 150 \\ 
    3 & 1800 / 360 &  900 / 180 \\
    4 & 1200 / 400 &  600 / 200 \\
    5 & 1000 / 429 &  500 / 214 \\
    \hline
  \end{tabular}
\end{table}