\begin{table}%t1
%\centering
\par
\caption{Basic data for the PNe investigated.\label{mean_tab}} 
\begin{tabular}{lllllccc}
\hline\hline
Name & PN G (according & GPN (according & $\alpha_{\rm J2000}$ & $\delta_{\rm J2000}$ & Size &  Stat. dist. & Radius  \\
 & Acker et~al. \cite{ESO}) & Kimeswenger \cite{Ki01}) &  &  & [\arcsec] &  [kpc] &  [pc] \\
\hline
MeWe 1-10 & {\tt PN G336.9-11.5} & {\tt GPN G336.98-11.58} & {\tt 17$^{\rm h}$34$^{\rm m}$28\fs18} & {\tt -54$^{\circ}$28\arcmin57\farcs4} & 76\arcsec & 2.9  & 0.53 \\
MeWe 1-11 & {\tt PN G345.3-10.2} & {\tt GPN G345.32-10.21} & {\tt 17$^{\rm h}$52$^{\rm m}$47\fs09} & {\tt -46$^{\circ}$42\arcmin00\farcs4} & 69\arcsec & 3.1  &  0.51\\
MeWe 2-5 & & {\tt GPN G340.93+03.75} & {\tt 16$^{\rm h}$34$^{\rm m}$49\fs60} & {\tt -42$^{\circ}$03\arcmin45\farcs1} & 28\arcsec & 8.0  & 0.54 \\
%Deviation & & $\pm 0\fs0073$ & $\pm 0\farcs11$ & & & & \\
\hline
\end{tabular}
\end{table}