\begin{table}%t3 
\caption{\label{Tab3}Physical conditions and ionic abundances in PNe and \ion{H}{ii}  regions.}
%\centerline
 {\small 
\par\begin{tabular}{lrrrrrrr}
\hline \hline\noalign{\smallskip}
&PN~4~~ &PN~5$^{1,2}~~$ &PN~6~~ &PN~7$^1$~~ &PN~10~~&PN~12~~&PN~14~~\\
\hline
T(\ion{O}{iii}) (K)&$17~870 \pm 980$ & $<$23~000 & $12~590 \pm 1500$ & $<$13~400 & $17~000 \pm 1000$ & $13~000 \pm 1000$ & $18~070 \pm 760$\\
T(\ion{N}{ii}) (K)& $15~830 \pm 2300$ & $16~100 \pm 1700$ & $12~082 \pm 1800$ &&&&$17~550 \pm 1000$\\
N(\ion{S}{ii}) (cm$^{-3}$)& $2980 \pm 360$ & $880 \pm 200$ & $3910 \pm 480 $ & $4000 \pm 2000$ & 1000 (adopt) & $2000 \pm 1000$ & $5150 \pm 500$\\
N(\ion{Ar}{iv}) (cm$^{-3}$)& $3240 \pm 1000$ & & 1000:&&& $2700 \pm 1000$ & $15~700 \pm 3500$\\
\hline
He$^+$ &7.05 $\pm$ 0.40 E-2& 5.2 $\pm$ 1.1 E-2& 9.52 $\pm$ 0.50 E-2 &1.07 $\pm$ 0.25 E-1& 1.11 $\pm$ 0.08 E-1&9.34 $\pm$ 0.6 E-2&5.69 $\pm$ 0.33 E-2\\
He$^{++}$(4686)&1.90 $\pm$ 0.18 E-2&4.20 $\pm$ 0.40 E-2&8.1 $\pm$ 4.0 E-4&0.00 E+00&0.00 E+00&2.00 $\pm$ 0.30 E-2&5.20 $\pm$ 0.10 E-2\\
O$^+$(3727)&4.01 $\pm$ 0.60 E-6&7.7 $\pm$ 2.3 E-6$^3$&1.17 $\pm$ 0.26 E-5&5.50 $\pm$ 1.50 E-5$^3$&5.85 $\pm$ 1.17 E-6$^3$&3.16 $\pm$ 1.05 E-6&1.15 $\pm$ 0.40 E-5$^3$\\
O$^{++}$(5007)&4.69 $\pm$ 0.53 E-5&4.6 $\pm$ 1.0 E-5&1.30 $\pm$ 0.20 E-4&1.02 $\pm$ 0.20 E-4&3.43 $\pm$ 0.52 E-5&1.56 $\pm$ 0.40 E-4&7.32 $\pm$ 0.60 E-5\\
N$^+$(6583)&2.03 $\pm$ 0.20 E-6&2.20 $\pm$ 0.50 E-5&1.87 $\pm$ 0.22 E-6&2.9 $\pm$ 1.0 E-6&2.54 $\pm$ 0.27 E-7&6.5 $\pm$ 1.0 E-7&2.44 $\pm$ 0.30 E-5\\
Ne$^{++}$(3869)&8.70 $\pm$ 1.00 E-6&--&2.18 $\pm$ 0.35 E-5&--&5.42 $\pm$ 0.74 E-6&2.36 $\pm$ 0.66 E-5&5.80 $\pm$ 0.50 E-6$^5$\\
Ne$^{+4}$(3425)&2.92 $\pm$ 0.45 E-8&--&0.00 E+00&--&0.00 E+00& -- & --\\
S$^+$(6717)&1.03 $\pm$ 0.10 E-7&5.5 $\pm$ 1.3 E-7&1.14 $\pm$ 0.17 E-7&7.8 $\pm$ 2.0 E-8&--&2.54 $\pm$ 0.60 E-8&7.93 $\pm$ 1.00 E-8\\
S$^{++}$(6311)&8.43 $\pm$ 1.20 E-7&2.3 $\pm$ 1.0 E-6&8.45 $\pm$ 1.65 E-7&7.75 $\pm$ 2.00 E-7&--&1.54 $\pm$ 0.50 E-6&4.1 $\pm$ 2.0 E-7\\
Ar$^{++}$(7135)&1.96 $\pm$ 0.17 E-7&4.10 $\pm$ 0.80 E-7&3.12 $\pm$ 0.32 E-7&4.9 $\pm$ 2.0 E-7&7.9 $\pm$ 1.4 E-8&2.82 $\pm$ 0.44 E-7&2.38 $\pm$ 0.30 E-7\\
Ar$^{+3}$(4740)&1.37 $\pm$ 0.15 E-7&--&7.80 $\pm$ 1.00 E-8&--&--&3.75 $\pm$ 0.80 E-7&2.08 $\pm$ 0.50 E-7\\
Ar$^{+4}$(7006)&3.21 $\pm$ 0.40 E-8&--&--&--&--&--&1.34 $\pm$ 0.20 E-7\\
\hline 
&PN~16 &PN~18 &PN~19 &PN~21 &\ion{H}{ii}~15&\ion{H}{ii}~9 &\ion{H}{ii}~4$^1$\\
\hline 
T(\ion{O}{iii}) (K)&$14~390 \pm 720$ & $18~000\pm 1000$ &$20~000\pm 2000$ & $13~668\pm1500$ & $11~700\pm300$ & 12~000 (adopt)&12~000 (adopt)\\
T(\ion{N}{ii}) (K)&&&&& $12~400 \pm 1500$\\
N(\ion{S}{ii}) (cm$^{-3}$)& $1140 \pm 200$ &$1420\pm400$& $<$100& $184\pm100$ &$187 \pm 100$&$<$100\\
N(\ion{Ar}{iv}) (cm$^{-3}$)&$5100 \pm 2000$\\
\hline 
He$^+$ &$1.23 \pm 0.10$ E-1&$<$6.00 E-2&$1.30 \pm 0.50$ E-1&$1.00 \pm 0.10$ E-1&$8.23 \pm 0.05$ E-2& $4.5 \pm 1.4$ E-2& $1.50 \pm 0.50$ E-2\\
He$^{++}$(4686)& $2.50 \pm 0.25$ E-2& $6.5 \pm 1.6$ E-2& $1.50 \pm 0.30$ E-2&0.00 E+00&0.00 E+00&0.00 E+00&0.00 E+00\\
O$^+$(3727)& $1.73 \pm 0.50$ E-5$^3$&-- & $1.64 \pm 0.40$ E-5$^3$& $5.5 \pm 1.5$ E-6& $4.31 \pm 0.30$ E-5&--&--\\
O$^{++}$(5007)& $1.39 \pm 0.20$ E-4& $1.88 \pm 0.30$ E-5& $1.82 \pm 0.40$ E-5& $8.3 \pm 2.0$ E-5& $8.36 \pm 0.40$ E-5&--&--\\
N$^+$(6583)&1.40  $\pm$  0.20 E-6&2.13  $\pm$  0.40 E-6&1.17  $\pm$  0.50 E-6&1.07  $\pm$  0.30 E-6&1.23  $\pm$  0.20 E-6&--&--\\
Ne$^{++}$(3869)&2.56 $\pm$ 0.30 E-5&4.01 $\pm$ 0.70 E-6&--&1.51 $\pm$ 0.40 E-5&1.54 $\pm$ 0.20 E-5&--&--\\
S$^+$(6717)&4.42 $\pm$ 0.60 E-8&1.58 $\pm$ 0.15 E-7&6.7 $\pm$ 1.1 E-7&1.44 $\pm$ 0.40 E-7&2.72 $\pm$ 0.30 E-7&--&--\\
S$^{++}$(6311)&6.26 $\pm$ 1.00 E-7&--&8.8 $\pm$ 1.2 E-7&$<$3.00 E-6&2.47 $\pm$ 0.30 E-6&--&--\\
Ar$^{++}$(7135)&2.57 $\pm$ 0.30 E-7&--&2.26 $\pm$ 0.60 E-7&3.37 $\pm$ 0.50 E-7&6.23 $\pm$ 0.15 E-7&--&--\\
Ar$^{+3}$(4740)&3.99 $\pm$ 0.40 E-7 &--&--&--&--&--&--\\
%Ar$^{+4}$(7006)\\
\hline 
\end{tabular}}
\medskip
$^1$ Observed with Gemini; $^2$~T(\ion{N}{ii}) for ionic abundances; $^3$~[\ion{O}{ii}] 7320 for O$^+$ abundance; $^4$~line intensity from Richer \& McCall (\cite{richer07}).
\end{table}