\begin{table}%t1
\caption{\label{tab:conv}Root mean square deviations of line ratios with simplified \mbox{cooling}.}
  \small%\centering
\par
  \begin{tabular}{c|c|c}
  \hline\hline
      Simulation  & [OI]/[NII] & [SII]/[OI] \\
    \hline  
    n5e4b500v70 & 0.440 & 0.305   \\    
    n2e4b500v55 & 0.161 & 0.103   \\
    n5e4b500v55 & 0.121 & 0.143   \\
    n2e4b500v50 & 0.068 & 0.110   \\
    n2e4b300v50 & 0.063 & 0.108   \\
    \hline
  \end{tabular}
\end{table}