\begin{table}%t6
\caption{\label{Q2343-t}Component structure of the $z_{\rm abs} = 2.431$ DLA system toward Q2343+12.} 
%\begin{center}
{\begin{tabular}{l c c c l c | l c c c l c}
\hline\hline
No. & $z_{\rm abs}$ & $v_{\rm rel}^*$ & $b (\sigma_b)$ & Ion & $\log N (\sigma_{\log N})$ & No. & $z_{\rm abs}$ & $v_{\rm rel}^*$ & $b (\sigma_b)$ & Ion & $\log N (\sigma_{\log N})$ \\
   &               & km s$^{-1}$     & km s$^{-1}$    &     &                            &    &               & km s$^{-1}$     & km s$^{-1}$    &     &                            \\ 
\hline
\multicolumn{5}{l}{\hspace{0.3cm} Low-ion transitions} & & & & & & & \\
\hline
1  & 2.428181 &           $-$154 & 3.0{\scriptsize (1.0)} & \ion{Fe}{ii} & 12.44{\scriptsize (0.03)} & 15 & 2.430674 & \phantom{0}$+$64 & 2.8{\scriptsize (0.2)} & \ion{Fe}{ii} & 12.38{\scriptsize (0.03)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.38{\scriptsize (0.03)} &    &	     &  		&			 & \ion{O}{i}	& 13.93{\scriptsize (0.05)} \\
   &          &                  &                        & \ion{Si}{ii} & 13.59{\scriptsize (0.02)} &    &	     &  		&			 & \ion{Si}{ii} & 13.13{\scriptsize (0.01)} \\
2  & 2.428277 &           $-$146 & 3.0{\scriptsize (0.9)} & \ion{Fe}{ii} & 12.94{\scriptsize (0.02)} & 16 & 2.430808 & \phantom{0}$+$76 & 3.2{\scriptsize (0.1)} & \ion{Fe}{ii} & 12.65{\scriptsize (0.02)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.98{\scriptsize (0.04)} &    &	     &  		&			 & \ion{O}{i}	& 14.37{\scriptsize (0.03)} \\
   &          &                  &      		  & \ion{Si}{ii} & 13.81{\scriptsize (0.06)} &    &	     &  		&			 & \ion{Si}{ii} & 13.32{\scriptsize (0.01)} \\
3  & 2.428383 &           $-$136 & 4.1{\scriptsize (0.3)} & \ion{Fe}{ii} & 13.18{\scriptsize (0.01)} & 17 & 2.431018 & \phantom{0}$+$94 & 8.3{\scriptsize (0.4)} & \ion{Fe}{ii} & 13.45{\scriptsize (0.02)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.52{\scriptsize (0.02)} &    &	     &  		&			 & \ion{O}{i}	& 15.27{\scriptsize (0.05)} \\
   &          &                  &      		  & \ion{Si}{ii} & 14.12{\scriptsize (0.06)} &    &	     &  		&			 & \ion{Si}{ii} & 14.01{\scriptsize (0.09)} \\
4  & 2.428499 &           $-$126 & 4.4{\scriptsize (0.5)} & \ion{Fe}{ii} & 12.49{\scriptsize (0.04)} & 18 & 2.431157 &  	 $+$106 & 5.1{\scriptsize (0.4)} & \ion{Fe}{ii} & 13.98{\scriptsize (0.04)} \\
   &          &                  &      		  & \ion{O}{i}   & 13.30{\scriptsize (0.19)} &    &	     &  		&			 & \ion{Zn}{ii} & 11.72{\scriptsize (0.03)} \\
   &          &                  &                        & \ion{Si}{ii} & 13.37{\scriptsize (0.01)} &    &	     &  		&			 & \ion{Cr}{ii} & 12.37{\scriptsize (0.03)} \\
5  & 2.428749 &           $-$104 & 8.5{\scriptsize (0.3)} & \ion{Fe}{ii} & 12.74{\scriptsize (0.01)} &    &	     &  		&			 & \ion{Mn}{ii} & 11.82{\scriptsize (0.04)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.51{\scriptsize (0.02)} &    &	     &  		&			 & \ion{O}{i}	& 15.76{\scriptsize (0.06)} \\
   &          &                  &                        & \ion{Si}{ii} & 13.08{\scriptsize (0.05)} &    &	     &  		&			 & \ion{Si}{ii} & 14.55{\scriptsize (0.03)} \\
6  & 2.428884 & \phantom{0}$-$93 & 3.0{\scriptsize (1.0)} & \ion{Fe}{ii} & 12.68{\scriptsize (0.02)} &    &	     &  		&			 & \ion{Ar}{i}  & 12.85{\scriptsize (0.18)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.29{\scriptsize (0.03)} &    &	     &  		&			 & \ion{N}{i}	& 14.31{\scriptsize (0.22)} \\
   &          &                  &                        & \ion{Si}{ii} & 12.95{\scriptsize (0.02)} &    &	     &  		&			 & \ion{P}{ii}  & $<$$12.67$ \\
7  & 2.429009 & \phantom{0}$-$82 & 5.9{\scriptsize (0.4)} & \ion{Fe}{ii} & 12.45{\scriptsize (0.02)} & 19 & 2.431288 &  	 $+$118 & 6.2{\scriptsize (0.6)} & \ion{Fe}{ii} & 14.09{\scriptsize (0.03)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.16{\scriptsize (0.03)} &    &	     &  		&			 & \ion{Zn}{ii} & 11.87{\scriptsize (0.02)} \\  
   &          &                  &                        & \ion{Si}{ii} & 12.87{\scriptsize (0.02)} &    &	     &  		&			 & \ion{Cr}{ii} & 12.38{\scriptsize (0.03)} \\
8  & 2.429249 & \phantom{0}$-$61 & 5.1{\scriptsize (0.4)} & \ion{Fe}{ii} & 12.50{\scriptsize (0.02)} &    &	     &  		&			 & \ion{Mn}{ii} & 11.89{\scriptsize (0.03)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.15{\scriptsize (0.03)} &    &	     &  		&			 & \ion{O}{i}	& 15.90{\scriptsize (0.05)} \\ 
   &          &                  &                        & \ion{Si}{ii} & 13.14{\scriptsize (0.05)} &    &	     &  		&			 & \ion{Si}{ii} & 14.71{\scriptsize (0.02)} \\
9  & 2.429355 & \phantom{0}$-$51 & 3.0{\scriptsize (0.8)} & \ion{Fe}{ii} & 12.85{\scriptsize (0.03)} &    &	     &  		&			 & \ion{Ar}{i}  & 12.86{\scriptsize (0.10)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.54{\scriptsize (0.02)} &    &	     &  		&			 & \ion{N}{i}	& 14.32{\scriptsize (0.15)} \\
   &          &                  &                        & \ion{Si}{ii} & 13.71{\scriptsize (0.02)} &    &	     &  		&			 & \ion{P}{ii}  & $<$$12.55$ \\
10 & 2.429500 & \phantom{0}$-$39 & 5.2{\scriptsize (0.2)} & \ion{Fe}{ii} & 12.65{\scriptsize (0.01)} & 20 & 2.431439 &  	 $+$131 & 4.7{\scriptsize (0.4)} & \ion{Fe}{ii} & 13.82{\scriptsize (0.03)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.22{\scriptsize (0.03)} &    &	     &  		&			 & \ion{Zn}{ii} & 11.67{\scriptsize (0.03)} \\
   &          &                  &                        & \ion{Si}{ii} & 13.28{\scriptsize (0.09)} &    &	     &  		&			 & \ion{Cr}{ii} & 12.20{\scriptsize (0.05)} \\
11 & 2.429702 & \phantom{0}$-$21 & 4.4{\scriptsize (0.5)} & \ion{Fe}{ii} & 12.20{\scriptsize (0.02)} &    &	     &  		&			 & \ion{Mn}{ii} & 11.64{\scriptsize (0.05)} \\
   &          &                  &      		  & \ion{O}{i}   & 13.97{\scriptsize (0.05)} &    &	     &  		&			 & \ion{O}{i}	& 15.80{\scriptsize (0.05)} \\   
   &          &                  &                        & \ion{Si}{ii} & 12.81{\scriptsize (0.06)} &    &	     &  		&			 & \ion{Si}{ii} & 14.54{\scriptsize (0.03)} \\
12 & 2.429942 & \phantom{$-$00}0 & 7.3{\scriptsize (0.2)} & \ion{Fe}{ii} & 13.28{\scriptsize (0.01)} &    &	     &  		&			 & \ion{Ar}{i}  & 12.44{\scriptsize (0.22)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.89{\scriptsize (0.01)} &    &	     &  		&			 & \ion{N}{i}	& 13.58{\scriptsize (0.25)} \\
   &          &                  &      		  & \ion{Si}{ii} & 13.73{\scriptsize (0.11)} &    &	     &  		&			 & \ion{P}{ii}  & $<$$12.45$ \\
13 & 2.430086 & \phantom{0}$+$13 & 9.6{\scriptsize (0.8)} & \ion{Fe}{ii} & 12.86{\scriptsize (0.06)} & 21 & 2.431570 &  	 $+$142 & 5.7{\scriptsize (0.2)} & \ion{Fe}{ii} & 13.48{\scriptsize (0.04)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.59{\scriptsize (0.02)} &    &	     &  		&			 & \ion{O}{i}	& 15.09{\scriptsize (0.07)} \\
   &          &                  &                        & \ion{Si}{ii} & 13.33{\scriptsize (0.01)} &    &	     &  		&			 & \ion{Si}{ii} & 13.76{\scriptsize (0.16)} \\
14 & 2.430394 & \phantom{0}$+$40 & 9.7{\scriptsize (0.2)} & \ion{Fe}{ii} & 13.19{\scriptsize (0.01)} & 22 & 2.431826 &  	 $+$165 & 6.9{\scriptsize (0.1)} & \ion{Fe}{ii} & 13.02{\scriptsize (0.01)} \\
   &          &                  &      		  & \ion{O}{i}   & 14.75{\scriptsize (0.01)} &    &	     &  		&			 & \ion{Si}{ii} & 13.77{\scriptsize (0.01)} \\
   &          &                  &                        & \ion{Si}{ii} & 13.68{\scriptsize (0.01)} & 23 & 2.432126 &  	 $+$191 & 6.9{\scriptsize (0.5)} & \ion{Fe}{ii} & 12.27{\scriptsize (0.03)} \\
   &          &                  &                        &              &                           &    &	     &  		&			 & \ion{Si}{ii} & 12.58{\scriptsize (0.03)} \\
\hline
\end{tabular}}
\parbox{16.5cm}{
$^*$ Velocity relative to $z=2.429942$. }
%\end{center}
\par
\end{table}