\begin{table}%t3
\caption{Correlation parameters. LHW~= this paper, PTH05~= Prochaska 
et~al. (\cite{Proc05}), EPL07~= Ellison et~al. (\cite{Elli07}), Lin06~= Linsky et~al. 
(\cite{Lins06}), Ol06~= Oliveira et~al. (\cite{Olive06}).}\label{table3}
\par
%\centering
\small
\begin{tabular}{c c c c c c c}     
\hline\hline
%&&&&&& \\[-8pt]
Correlation  & Targets & Data points& $a\pm1\sigma$ & $b\pm1\sigma$ & 
Spearman test & $\chi^{2}$/$N$\\
$y=a+bx$ & $x=$ list intersection & & & correlation  & &\\
\hline
%&&&&&& \\[-8pt]
 (TiII/HI) vs. (DI/HI) & LHW + PTH05 & 16 & ($-$3.6 $\pm$ 2.9) $\times$ 10$^{-10}$ 
& (1.66 $\pm$ 0.29) $\times$ 10$^{-4}$   & 98\% & 1.3 \\
 (TiII/HI) vs. (DI/HI) & Same without $\mu$Col  & 15 & ($-$0.8 $\pm$ 2.3) $\times$ 10$^{-10}$  &  (1.35 $\pm$ 0.22) $\times$ 10$^{-4}$  & 99.97\% & 1.1\\
 (TiII/HI) vs. (DI/HI) & Same + EPL07 (no $\mu$Col)& 19 & ($-$0.6 $\pm$ 
2.32) $\times$ 10$^{-10}$  & (1.29 $\pm$ 0.21) $\times$ 10$^{-4}$    & 99.5\% &1.0\\
 (FeII/HI) vs. (DI/HI) & Table~\ref{table2} Lin06 & 38  & ($-$1.56 $\pm$ 0.76) $\times$ 10$^{-2}$  & (4.96  $\pm$ 0.65) $\times$ 10$^{+3}$  & 99.7\% &1.6\\
 (TiII/HI) vs. (DI/OI) & (LHW + PTHO5) x (Oli06) & 10 & ($-$1.24 $\pm$ 
3.29) $\times$ 10$^{-10}$ & (6.05 $\pm$ 1.45) $\times$ 10$^{-8}$    & 98\% &2.7\\
 (TiII/HI) vs. (DI/OI) & Same+EPLO7 & 12 & ($-$2.07 $\pm$ 3.46) $\times$ 10$^{-10}$ & (6.46 $\pm$ 1.50) $\times$ 10$^{-8}$    & 97\% & 2.3 \\
 (Fe/Fe0) vs. (DI/OI) & (Table~\ref{table2} Lin06) x (Oli06) & 23  & (3.5 $\pm$ 
5.6) $\times$ 10$^{-3}$  &  1.28 $\pm$ 0.22  & 99.6\% & 1.3 \\
 (Fe/Fe0) vs. (DI/OI) & Same with 3 D/O \%2 (see text) & 23 & ($-$0.5 
$\pm$ 6.6) $\times$ 10$^{-3}$  & 1.49 $\pm$ 0.26   & 99.95\% & 0.7\\
 (TiII/DI) vs. (LogNH) & LHW + PTH05 (no $\mu$Col) & 15 & (5.9 $\pm$ 
2.5) $\times$ 10$^{-4}$ & ($-$2.34 $\pm$ 1.24) $\times$ 10$^{-5}$   & 25\% & 1.46\\
 (TiII/DI) vs. (LogNH) & same + EPL07 & 19 & (7.6 $\pm$ 1.8) $\times$ 10$^{-4}$ 
& ($-$3.2 $\pm$ 0.9) $\times$ 10$^{-5}$   & 64\% & 1.8 \\
\hline
\end{tabular}
\end{table}