\begin{table}%t4
%\centering
\par
   \caption{Observed lines.\label{iiothers}}
 %\small
   \begin{tabular}{l cc cc cc cc cc cc}
%
   \hline\hline
 &\multicolumn{2}{c}{\object{CPD-53\degr5736}}&\multicolumn{2}{c}{\object{IRAS~16594--4656}}&\multicolumn{2}{c}{\object{IRAS~17106--3046}}&\multicolumn{2}{c}{\object{IRAS~17150--3224}}&\multicolumn{2}{c}{\object{IRAS~17245--3951}} &\multicolumn{2}{c}{\object{IRAS~17441--2411}} \\
\cline{2-3}\cline{4-5}\cline{6-7}\cline{8-9}\cline{10-11}\cline{12-13}
Molecule & $T_{{\rm mb}}$ & $\int T_{\rm mb}{{\rm d}v}$ & $T_{{\rm mb}}$ & $\int T_{\rm mb}{{\rm d}v}$ & $T_{{\rm mb}}$ & $\int T_{\rm mb}{{\rm d}v}$ & $T_{{\rm mb}}$ & $\int T_{\rm mb}{{\rm d}v}$ & $T_{{\rm mb}}$ & $\int T_{\rm mb}{{\rm d}v}$ & $T_{{\rm mb}}$ & $\int T_{\rm mb}{{\rm d}v}$ \\ 
 & K & K~km~s$^{-1}$ &  K & K~km~s$^{-1}$ &  K & K~km~s$^{-1}$ &  K & K~km~s$^{-1}$ & K & K~km~s$^{-1}$ & K & K~km~s$^{-1}$ \\
    \hline
HCN($J=1$--0) & --   & $<$0.07 & 0.02 & \phantom{0}0.47 &  --  & --   & 0.02 & \phantom{0}0.54 &  --  & $<$0.09  & 0.05 & 0.32 \\
CO($J=2$--1) & 0.09 & \phantom{$<$}2.07 & 1.75 & 32.60 & 0.30 & 1.84 & 0.65 & 12.84 & 0.04 & \phantom{$<$}0.58       & 0.57 & 6.24 \\
$I_{\rm HCN}$/$I_{\rm CO}$&      & $<$0.04 &   & \phantom{0}0.01 &    &  -- &   & \phantom{0}0.04 &     & $<$0.15  &      & 0.05 \\
%
  \hline
%
  \end{tabular}
\end{table}