\begin{table}%t2
\caption{Statistical properties of the energy levels of D$_3^+$ with $J = 0$ and $J = 1$. $J$ is the rotational quantum number and $K$ its projection on the molecular symmetry axis; $g_I$ is the nuclear spin statistical weight. Only the two lowest energy levels, of A1 and E symmetry, were included in the model. The energies were computed by Polyansky \& Tennyson (\cite{polyansky99}). Note that 1 cm$^{-1} \equiv 1.4388$~K. }\label{D3+}
%\centering
\par
\begin{tabular}{rrrccrrr}
\hline  \hline
$J$    &   $K$    &   Energy (cm$^{-1}$)  &  Symmetry   &   Modification  &  $g_I$  &  $(2J+1)g(I_{\rm tot})$   &  $E_{JK}$ (K)  \\ 
\hline
 0     &    0     &         0.000      &  A1     &   ortho  &     10             &    10    &   0.0  \\
 1     &  1  &        32.331         &  E      &   meta   &     8            &    24    &  46.5  \\ 
 1     &  0       &        43.619         &  A2     &   para   &       1            &    3     &  62.8  \\
\hline
\end{tabular}
\end{table}