\begin{table*}%t3
%\centering
\par
  \caption{Spectroscopic constants determined for the $v_{11}=2,~3$, and~4~overtone bending
             states of HC$_5$N.
             Standard errors in units of the last digit are given in parentheses for the
             fitted parameters.  \label{tab:ot}}
 $$
  \begin{tabular}{lcD{.}{.}{8}D{.}{.}{8}D{.}{.}{8}}
    \hline \hline \\[-1ex]%[-3ex]
                &               & \multicolumn{1}{c}{$v_{11}=2$} &
                                  \multicolumn{1}{c}{$v_{11}=3$} &
                                  \multicolumn{1}{c}{$v_{11}=4$} \\[1ex]
    \hline  \\[-1ex]%[-3ex]
    $B$             &  (MHz)  &  1336.911999(30)   &  1339.713811(29)   &  1342.523686(28)   \\%[-1ex]
    $D$             &  (Hz)   &    33.2316(22)     &    34.8337(22)     &    36.4611(27)     \\%[-1ex]
    $H$             &($\mu$Hz)&     1.635^a        &     1.635^a        &     1.635^a        \\%[-1ex]
    $d_{JL(11,11)}$ &  (kHz)  &    -3.3316(86)     &     -3.3585(43)     &     -3.3630(21)     \\%[-1ex]
    $q_t$           &  (MHz)  &     1.167820^a     &     1.172741(28)   &     1.177662^a     \\%[-1ex]
    $q_{tJ}$        &  (Hz)   &     -1.0779^a       &     -1.0928(30)     &     -1.1077^a       \\%[-1ex]
    $x_{L(11,11)}$  &  (GHz)  &     6.29229(22)    &     6.27067(27)    &     6.25081(16)    \\%[-1ex]
    $\sigma_{\rm fit}$  &  (kHz)  &     8.9            &    10.1            &    12.8            \\%[-1ex]
    No. of lines    &         &      85            &      109           &      115           \\%[-1ex]
    $J$ range       &         &  \multicolumn{1}{c}{9--85}   &
                                 \multicolumn{1}{c}{10--85}  &
                                 \multicolumn{1}{c}{13--85} \\[1ex]
    \hline
  \end{tabular}
  $$
  \begin{list}{}{}
    \item[$^a$] Fixed in the analysis.
  \end{list}
  \end{table*}