\begin{table}%t6
%\centering
\par
\caption{\label{ISO_upper}The brightest lines predicted by models 1 and 6 (the model with the largest water abundance) compared with the upper limits derived by the ISO observations.)  }
\begin{tabular}{cccccc} \hline \hline
&&Model 1 &Model 6          & ISO & \\
Wavelength    &  Transition        &   Intensity &   Intensity   & Instrument  & Upper limit (3$\sigma$)  \\
 ($\mu$m)     & $J_{K_- K_+} \rightarrow$ $J'_{K'_- K'_+}$ &   (erg~s$^{-1}$~cm$^{-2}$) &   (erg~s$^{-1}$~cm$^{-2}$) &&  (erg~s$^{-1}$~cm$^{-2}$) \\ \hline
ortho &&&&& \\
75.4957       & 8$_{5 4} \rightarrow$  8$_{4 5}$       &  2.6E-20        &      1.9E-19         & LWS04       & 9.78e-12 \\
108.073       & 2$_{2 1} \rightarrow$  1$_{1 0}$       &  1.3E-12        &      1.5E-12         & LWS04       & 2.21e-12 \\ 
179.527       & 2$_{1 2} \rightarrow$  1$_{0 1}$       &  1.2E-12        &      7.0E-12         & LWS04       & 2.56e-11 \\  
113.538       & 4$_{1 4} \rightarrow$  3$_{0 3}$       &  8.3E-13        &      8.7E-13         & LWS01       & 1.2e-11 \\  
para &&&&& \\
100.983       & 2$_{2 0} \rightarrow$  1$_{1 1}$       &  7.3E-13        &      9.1E-13         & LWS01       & 8.37e-12 \\
138.527       & 3$_{1 3} \rightarrow$  2$_{0 2}$       &  7.3E-13        &      7.3E-13         & LWS01       & 4.14e-12 \\
156.197       & 3$_{2 2} \rightarrow$  3$_{1 3}$       &  2.2E-13        &      3.4E-13         & LWS01       & 1.60e-12 \\ \hline
\end{tabular}
\end{table}