\begin{table}%t4
\caption{\label{tab4}Temperatures and abundances uncertainties.}
%\centering
\small
\par
\begin{tabular}{lrrrrrr}
\hline\hline
PN&$\Delta F_{\lambda}$&
$\Delta$\tenii& 
$\Delta$\teoiii& 
$\Delta A$(O)& 
$\Delta A$(N)& 
$\Delta A$(S)\\
&
$\%$&
$\%$&
$\%$&
dex&dex&dex\\
(1)& (2)& (3)& (4)& (5)& (6)& (7)\\
\hline
 PN~5 & 16&  		$\dots$& 	6&  0.09&  0.06&  0.06\\
 PN3m  & 23& 	8& 	$\dots$& 0.17&  0.11&  0.10\\
 PN9m & 27,5&  9& 2&  0.21&  0.13&  0.12\\
 PN158m& 48&$\dots$& 23& 0.29& 0.20& 0.19\\
\hline
\end{tabular}
\end{table}