\begin{table}%ta.18 online
\caption{\label{tol1457abun}Physical conditions and chemical abundances of the ionized gas for the regions analyzed in Tol~1457-262 and Arp~252  (galaxy~A, ESO~566-8, and galaxy~B, ESO~566-7).} 
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 {\small  \begin{tabular}{l  rrrrr}
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Object                 &     Tol 1457-262A   &    Tol 1457-262B    &  Tol 1457-262C      &   ESO 566-8         &  ESO 566-7$^a$  \\
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\tableline
\noalign{\smallskip}				 $T_{\rm e}$(O III) (K)  & $14~000 \pm 700$& $15~200 \pm 900$&$13~400 \pm 1100$ &  $8700 \pm 900$ & $7900 \pm 1000$ \\
$T_{\rm e}$(O II) (K) &   $12~500 \pm 600$ &   $14~200 \pm 700$   &$12~400 \pm 1000$ & $9100 \pm 800$ & $8500 \pm 900$ \\
$N_{\rm e}$ (cm$^{-3}$) &$200  \pm 80$ &  $<$100 & $200 \pm 100$ & $300 \pm 100$ & $100 \pm 150$ \\
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12+log(O$^{+}$/H$^+$)   & $7.59 \pm 0.10$ & $7.32 \pm 0.10$ & $7.69 \pm 0.15$ & $8.23 \pm 0.13$ &    $8.39 \pm 0.18$ \\
12+log(O$^{++}$/H$^+$) & $7.87 \pm 0.05$  & $7.74 \pm 0.06$  &	 7.82  $\pm$  0.09  &    8.04  $\pm$  0.10  &    7.82  $\pm$  0.15 \\
12+log(O/H)             &    8.05  $\pm$  0.07$^c$&  7.88  $\pm$  0.07  &    8.06  $\pm$  0.11  &    8.46  $\pm$  0.11$^c$&  8.50  $\pm$  0.16 \\
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log(O$^{++}$/O$^+$)     &    0.27  $\pm$  0.11  &    0.43  $\pm$  0.11  &	 0.14  $\pm$  0.16  & $-$0.19  $\pm$  0.17  & $-$0.57  $\pm$  0.22  \\
12+log(N$^+$/H$^+$)     &    6.02  $\pm$  0.06  &    5.70  $\pm$  0.09  &	 6.10  $\pm$  0.10  &    7.49  $\pm$  0.06  &    7.57  $\pm$  0.10 \\
12+log(N/H)             &    6.48  $\pm$  0.09  &    6.27  $\pm$  0.12  &	 6.47  $\pm$  0.15  &    7.71  $\pm$  0.08  &    7.67  $\pm$  0.11 \\
log(N/O)                & $-$1.57  $\pm$  0.11  & $-$1.61  $\pm$  0.12  & $-$1.59  $\pm$  0.16  & $-$0.76  $\pm$  0.12  & $-$0.82  $\pm$  0.16 \\
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12+log(S$^+$/H$^+$)     &    5.65  $\pm$  0.05  &    5.53  $\pm$  0.06  &	 5.84  $\pm$  0.09  &    6.32  $\pm$  0.07  &    6.74  $\pm$  0.12 \\
12+log(S$^{++}$/H$^+$)  &    5.95  $\pm$  0.14  &    5.95  $\pm$  0.16  &	 \nodata	      &    \nodata	        &    \nodata	     \\
12+log(S/H)             &    6.18  $\pm$  0.10  &    6.16  $\pm$  0.15  &	 \nodata	      &    \nodata	        &    \nodata	     \\
log(S/O)                & $-$1.88  $\pm$  0.13  & $-$1.72  $\pm$  0.18  &	 \nodata	      &    \nodata	        &    \nodata	     \\
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12+log(Ne$^{++}$/H$^+$) &    6.99  $\pm$  0.15  &    6.87  $\pm$  0.18  &    6.98  $\pm$  0.20  &    7.48  $\pm$  0.16  &    \nodata	     \\
12+log(Ne/H)            &    7.17  $\pm$  0.15  &    7.00  $\pm$  0.18  &    7.22  $\pm$  0.20  &    7.90  $\pm$  0.16  &    \nodata	     \\
log(Ne/O)               & $-$0.88  $\pm$  0.18  & $-$0.88  $\pm$  0.20  & $-$0.84  $\pm$  0.22  & $-$0.56  $\pm$  0.19  &    \nodata	     \\
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12+log(Ar$^{+2}$/H$^+$) &    5.73  $\pm$  0.08  &    5.66  $\pm$  0.14  &    5.77  $\pm$  0.17  &    6.01  $\pm$  0.14  &    6.41  $\pm$  0.18 \\
12+log(Ar$^{+3}$/H$^+$) &    \nodata          &    \nodata 	        &    \nodata	      &    5.48  $\pm$  0.20  &    \nodata      \\
12+log(Ar/H)            &    5.55  $\pm$  0.08  &    5.44  $\pm$  0.14  &	 5.61  $\pm$  0.17  &    6.30  $\pm$  0.17  &	 6.00  $\pm$  0.20     \\
log(Ar/O)               & $-$2.50  $\pm$  0.13  & $-$2.44	 $\pm$  0.18  & $-$2.45  $\pm$  0.20  & $-$2.17  $\pm$  0.19  & $-$2.49  $\pm$  0.25	      \\
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12+log(Fe$^{++}$/H$^+$) &    5.43:            &	   5.62  $\pm$  0.19  &	 \nodata	      &    5.80:            &    \nodata	     \\
12+log(Fe/H)            &    5.81:            &	   5.98  $\pm$  0.19  &	 \nodata	      &    6.00:            &    \nodata	     \\
log(Fe/O)               & $-$2.24:            & $-$1.90  $\pm$  0.22  &	 \nodata	      & $-$2.46:            &    \nodata	     \\
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12+log(He$^+$/H$^+$)    &   10.99  $\pm$  0.06  &   10.95  $\pm$  0.10  &  10.99   $\pm$  0.08  &  11.09  $\pm$  0.07   & 	11.06:	     \\
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[O/H]$^b$               & $-$0.61  $\pm$  0.12  & $-$0.78  $\pm$  0.12  & $-$0.60  $\pm$  0.16  & $-$0.20  $\pm$  0.16  & $-$0.16            \\
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\end{tabular}}
\medskip
$^a$ Electron temperatures estimated using empirical relations; $^b$~[O/H]=log(O/H)-log(O/H)$_{\odot}$, using 12+log(O/H)$_{\odot} = 8.66 \pm 0.05$ \citep{ASP05}; $^c$~considering the existence of O$^{+3}$ because of the detection of \ion{He}{ii} $\lambda$4686, this value should be $\sim$0.01~dex higher.
\end{table}