\begin{table}%t6
\begin{minipage}{90mm}
 \caption
{\label{reddening} Maximum and global reddening within the NLR.}
\small\def\footnoterule{}
%\centering
\begin{tabular}{lccc}
\hline
\hline\noalign{\smallskip}
\multicolumn{1}{c}{Galaxy} & max. $E_{B - V}$\footnote{Highest reddening value within the NLR.} & Distance\footnote{Distance from the centre at which highest reddening occurs.} & global $E_{B - V}$\footnote{Derived by adding the H$\alpha$ and H$\beta$ flux within the NLR.}\\
& (mag) & (\arcsec) & (mag) \\[0.25ex]
\hline\\[-2.3ex]
\object{IC~5063}      & 0.80 $\pm$ 0.01 & $-$1.11 & 0.39 $\pm$ 0.05\\
\object{NGC~7212}     & 0.92 $\pm$ 0.03 & $-$3.33 & 0.56 $\pm$ 0.07\\
\object{ESO~362-G008} & 0.66 $\pm$ 0.04 & 0 & 0.39 $\pm$ 0.09\\
\object{NGC~3281}     & 0.57 $\pm$ 0.02 & $-$1.4 & 0.33 $\pm$ 0.05\\
\object{NGC~5643}     & 0.65 $\pm$ 0.01 & 0  & 0.30 $\pm$ 0.04\\
\object{NGC~1386}     & 0.88 $\pm$ 0.2  & $-$4 & 0.48 $\pm$ 0.06\\[0.1ex]
\hline\\[-2.3ex]
\end{tabular} 
\end{minipage}
\end{table}