\begin{table}%t4
\caption{\label{table6} Mean closure relationships from
our sample. We indicate the wind and ISM closure relationships,
depending on the cooling frequency position.}
 \small%\centering
\par
 \begin{tabular}{ccc}
   \hline\hline
    & ISM  & Wind \\
   \hline
   $\nu_{\rm X}<\nu_{\rm c}$ & $\delta -1.5\alpha = -0.5\pm0.2 $&  $\delta -1.5\alpha -0.5 =
-1\pm0.2$ \\
   $\nu_{\rm c}<\nu_{\rm X}$ & $\delta -1.5\alpha + 0.5 = 0 \pm0.2 $  & $\delta - 1.5\alpha +0.5 =
0\pm 0.2 $ \\
   \hline
 \end{tabular}
\end{table}