\begin{table}%t1
\caption{\label{corr}Correlations between the main parameters which characterise the sources in CAIXA.}
%%\centerline
$$
 {\begin{tabular}{ccccccccccccc}
\hline\hline
 & $L_{\rm 2-10}$ & $L_{\rm 0.5{-}2}$ & $L_{\rm 0.5{-}2}/L_{\rm 2{-}10}$ & ${\it EW}_{6.4}$ & $\Gamma_h$ & $L_{\rm bol}/L_{\rm Edd}$ & H$_\beta$ & $M_{\rm BH}$ & $L_{\rm 6~cm}$ & $L_{\rm 20~cm}$ & $R_{\rm x}$ & $R_{\rm l}$\\
\hline
\multirow{2}{*}{$L_{\rm 2-10}$} & \multirow{2}{*}{--} & 0.92 & \multirow{2}{*}{X} & --0.33 & \multirow{2}{*}{X}& \multirow{2}{*}{X} & 0.37 & 0.80 & 0.65 & 0.79 & \multirow{2}{*}{X} & \multirow{2}{*}{X}\\
 & & $<$$-38$ &  & --4.4 & & & --4 & --20.1 & --11.7 & --23.0 & & \\
\multirow{2}{*}{$L_{\rm 0.5-2}$} & 0.92 & \multirow{2}{*}{--} & \multirow{2}{*}{X} & --0.30 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & 0.67 & 0.63 & 0.77 & \multirow{2}{*}{X} & \multirow{2}{*}{X}\\
& $<$$-38$ & & & --3.2 & & & & --10.7 & --10.7 & --23.1 & &\\
\multirow{2}{*}{$L_{\rm 0.5-2}/L_{\rm 2-10}$} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{--} & \multirow{2}{*}{X} & 0.42 & \multirow{2}{*}{X} & --0.64 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} \\
& & & & & --7.3 & & --11.2 & & & & & \\
\multirow{2}{*}{$EW_{6.4}$} & --0.33 & --0.30 & \multirow{2}{*}{X} & \multirow{2}{*}{--} & \multirow{2}{*}{X} & -0.38 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} \\
& --4.4 & --3.2 & & & & --3.2 & & & & & & \\
\multirow{2}{*}{$\Gamma_h$} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & 0.42 & \multirow{2}{*}{X} & \multirow{2}{*}{--} & \multirow{2}{*}{X} & --0.39 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} \\ 
& & & --7.3 & & & & --4.1 & & & & & \\
\multirow{2}{*}{$L_{\rm bol}/L_{\rm Edd}$} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & -0.38 & \multirow{2}{*}{X} & \multirow{2}{*}{--} & --0.40 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} \\ 
& & & & --3.2 & & & --3.7 & & & & & \\ 
\multirow{2}{*}{H$_\beta$} & 0.37 & \multirow{2}{*}{X} & -0.64 & \multirow{2}{*}{X} & -0.39 & --0.40 & \multirow{2}{*}{--} & 0.69 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X}\\
& --4 & & --11.2 & & --4.1 & --3.7 & & --12.0 & & & &\\
\multirow{2}{*}{M$_{\rm BH}$} & 0.80 & 0.67 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & 0.69 & \multirow{2}{*}{--} & 0.49 & 0.66 & \multirow{2}{*}{X} & \multirow{2}{*}{X}\\
 & --20.1 & --10.7 & & & & & --12.0 & & --4.7 & --8.0 & & \\
\multirow{2}{*}{$L_{\rm 6~cm}$} & 0.65 & 0.63 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X}& \multirow{2}{*}{X} & 0.49 & \multirow{2}{*}{--} & 0.92 & 0.65 & 0.35 \\
& --11.7 & --10.7 & & & & & & --4.7 & & --25.3 & --11.4 & --3.2 \\
\multirow{2}{*}{$L_{\rm 20~cm}$} & 0.79 & 0.77 & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & 0.66 & 0.92 & \multirow{2}{*}{--} & 0.55 & \multirow{2}{*}{X}\\
& --23.0 & --23.1 & & & & & & --8.0 & --25.3 & & --9.5 & \\
\multirow{2}{*}{$R_{\rm x}$} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & 0.65 & 0.55 & \multirow{2}{*}{--} & 0.58 \\
& & & & & & & & & --11.4 & --9.5 & & --14.0\\
\multirow{2}{*}{$R_{\rm l}$} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & \multirow{2}{*}{X} & 0.35 & \multirow{2}{*}{X} & 0.58 & \multirow{2}{*}{--} \\
& & & & & & & & & --3.2 & & --14.0 & \\
\hline
\end{tabular}}
$$
\par
\smallskip
\par
For each pair, the Spearman correlation coefficient $\rho$ is reported (top), along with the logarithm of the NHP (bottom). If the latter is larger than --3.0, we consider the correlation with low significance and an ``X'' is shown. Parameters with no significant correlations, namely ${\it EW}_{6.7}$, ${\it EW}_{6.97}$ and $\Gamma_s$, are not listed in the table. Correlations involving $L_{\rm 0.5{-}2}$ or $L_{\rm 0.5-2}/L_{\rm 2{-}10}$ were performed with the unobscured sub-catalogue of CAIXA. In this table, we also show trivial correlations for completeness, such as the $L_{0.5-2}/L_{2-10}$ versus $\Gamma_h$, or the H$\beta$ {\it FWHM} versus $L_{\rm bol}/L_{\rm Edd}$ one. See B09 and text for details.
\end{table}