\begin{table}%t3
\caption{Solar abundances and typical galactic depletion values of\protect elements investigated in
    this paper. \label{tab:solar}}
%\centerline
{\begin{tabular}{lcccc}
\hline
\hline
Ion  &  log($X$/H)+12$^{a}$&     & [$X$/S]$^{b,c}$&  \\
               &                                &Cold disc &Warm disc&Halo \\
\hline
 H~{\sc i}   & $12.00$ & ...& ...      & ...\\
 Si~{\sc ii} & $7.55\pm 0.02$ & $-1.3$ &$-0.4$ &$-0.3$\\
%& P~{\sc ii}  & $5.57\pm 0.04$& \\
S~{\sc ii}  & $7.27\pm 0.05$ & $+0.0$&$+0.0$&$+0.0$\\
 Cr~{\sc ii} & $5.68\pm 0.03$ & $-2.1$&$-1.2$&$-0.6$\\
 Mn~{\sc ii} & $5.53\pm 0.04$ & $-1.5$&$-1.0$&$-0.7$\\
 Fe~{\sc ii} & $7.51\pm 0.01$ & $-2.2$&$-1.4$&$-0.6$\\
 Ni~{\sc ii}& $6.25\pm 0.02$ & $-2.2$&$-1.4$&$-0.6$\\
Zn~{\sc ii} & $4.65\pm 0.02$ & $-0.4$&$-0.2$&$-0.1$ \\
\hline
\end{tabular}}
\par
\smallskip
$^{a}$  Solar and  Meteorite abundances from Anders
(1993).\\
$^{b}$ $[X/{\rm H]}= \log[Z(X)]-\log[Z_\odot(X)]$.\\
$^{c}$  Galactic values are from Welty et~al. (1999).  
\par
\end {table}
\par
  %.............................
\begin{table}%t4
  %\centering
\caption{Total column densities and integrated abundance ratios relative to solar
  in the six DLAs of our sample.\label{tab:ALLtotalN}}
   \begin{tabular}{cc} 
    \begin{tabular}{cccc}\hline\hline
      Species & $N$(cm$^{-2}$)       & [$X$/S] & [$X$/Fe]\\\\ \hline\\
      Q~0013$-$004 &$z_{\rm abs}~=~1.973$&&\\\hline
      FeII & $7.55 \pm 0.01 \times 10^{14}$ &  $-0.78\pm0.03$ & $ 0.00\pm0.00$ \\
      SII & $2.64 \pm 0.08 \times 10^{15}$ &   $0.00\pm0.00$ &  $0.78\pm0.03$ \\
      SiII  & $2.72 \pm 0.20 \times 10^{15}$ &   $-0.27\pm0.08$ &  $0.51\pm0.07$ \\ 
      ZnII & $7.30 \pm 1.12 \times 10^{12}$ &  $0.06\pm0.15$ &  $0.84\pm0.15$ \\
      NiII & $7.57 \pm 0.72 \times 10^{13}$ &  $-0.52\pm0.05$ & $0.26\pm0.04$ \\\\
      \hline
    \end{tabular}\\
    \begin{tabular}{cccc}
      Q~0405$-$443 & $z_{\rm abs}~=~2.595$& & \\\hline
      FeII & $1.30 \pm 0.13 \times 10^{15}$ &  $-0.37\pm0.10$ & $0.00\pm0.00$ \\
      SII &$1.75 \pm 0.04\times 10^{15}$  & $0.00\pm0.00$ & $0.37\pm0.10$ \\
      SiII  &$3.52 \pm 0.07\times 10^{15}$   & $0.03\pm0.03$ & $0.40\pm0.10$ \\ 
      CrII & $2.23 \pm 0.07\times 10^{13}$ & $-0.30\pm0.04$  & $0.06\pm0.10$ \\
      NiII & $6.92 \pm 0.08\times 10^{13}$ &  $-0.38\pm0.02$ &
      $-0.02\pm0.10$ \\
      \hline
    \end{tabular}\\
    \begin{tabular}{cccc}
      Q~1037$-$270 & $z_{\rm abs}~=~2.139$& & \\\hline
      FeII & $4.98 \pm 0.14 \times 10^{14}$ & $-0.32\pm0.04$ &  $0.00\pm0.00$ \\
      SII & $6.05 \pm 0.15 \times 10^{14}$ & $ 0.00\pm0.00$ & $0.32\pm0.04$ \\
      SiII  & $1.89 \pm 0.15 \times 10^{15}$ & $0.21\pm0.08$ & $0.53\pm0.09$ \\ 
      CrII & $1.02 \pm 0.58 \times 10^{13}$ &  $-0.18\pm0.57$ &$ 0.14\pm0.57$ \\
      NiII & $6.43 \pm 1.04 \times 10^{13}$ &  $0.05\pm0.16$ & $0.36\pm0.16$  \\
      MnII & $2.22 \pm 0.08 \times 10^{12}$ &  $-0.70\pm0.04$ & $-0.37\pm0.05$ \\
      \hline
    \end{tabular}
   &
    \begin{tabular}{cccc}\hline\hline
      Species & $N$(cm$^{-2}$)       & [$X$/S] & [$X$/Fe]\\\\\hline\\
      Q~0405$-$443 & $z_{\rm abs}~=~2.549$              &  & \\\hline
      FeII & $1.05 \pm 0.01 \times 10^{15}$ & $-0.53\pm0.04$ & $0.00\pm0.00$ \\
      SII & $2.03 \pm 0.07\times 10^{15}$ &  $0.00\pm0.00$ & $0.53\pm0.14$ \\
      SiII  & $2.38 \pm 0.32\times 10^{15}$   & $-0.21\pm0.15$ & $0.32\pm0.14$ \\ 
      CrII & $2.46 \pm 0.76\times 10^{13}$ &  $-0.33\pm0.31$ & $0.20\pm0.31$ \\
      NiII & $7.05 \pm 0.96\times 10^{13}$ &  $-0.44\pm0.14$ & $0.09\pm0.14$ \\\\
      \hline
    \end{tabular}
     \begin{tabular}{cccc}
      Q~0528$-$250 &$z_{\rm abs}~=~2.811$&&\\\hline
      %Species & $N$(cm$^{-2}$)       & [X/S]  & [X/Fe]\\\hline\\
      FeII & $2.60 \pm 0.03 \times 10^{15}$  &  $-0.37\pm0.01$ & $0.00\pm0.00$ \\
      SII & $3.49 \pm 0.02\times 10^{15}$  &   $0.00\pm0.00$ & $0.37\pm0.01$ \\
      SiII  &  $1.01 \pm 0.05\times 10^{16}$   &  $0.18\pm0.05$ & $0.55\pm0.05$ \\ 
      ZnII & $1.27 \pm 0.26\times 10^{13}$   &   $0.18\pm0.21$ & $0.55\pm0.21$ \\
      CrII & $7.18 \pm 1.45\times 10^{13}$   &  $-0.10\pm0.20$ & $0.17\pm0.20$  \\
      NiII & $1.62 \pm 0.32 \times 10^{14}$  &  $-0.31\pm0.20$ & $0.05\pm0.20$ \\
      \hline
    \end{tabular}
     \begin{tabular}{cccc}
\par
      Q~1157+014 & $z_{\rm abs}~=~1.944$& [$X$/Zn]& \\\hline
      FeII & $2.95 \pm 0.08 \times 10^{15}$ &  $-0.43\pm0.04$ &  $0.00\pm0.00$ \\
      SiII & $1.00 \pm 0.01 \times 10^{16}$ &  $0.06\pm0.02$ &  $0.50\pm0.03$ \\
      ZnII & $1.09 \pm 0.02 \times 10^{13}$ &  $0.00\pm0.00$ &  $0.43\pm0.04$ \\
      CrII & $6.07 \pm 0.19 \times 10^{13}$ &  $-0.29\pm0.04$ &  $0.14\pm0.04$ \\
      NiII & $1.62 \pm 0.05 \times 10^{14}$ &  $-0.43\pm0.04$ & $0.00\pm0.04$ \\
      \hline
    \end{tabular}
    \end{tabular}
\end{table}