\begin{table}%t1
\caption{\label{tabres}Correlations and parameters from a fit in the Kitt Peak data or from the literature.}
\small%%\centerline

 {
\begin{tabular}{ccccc}
\hline \hline
Type &  Variable &  Kitt Peak & Fit &  Literature \\ 
\hline
Obs. &  Corr(${\it ff}_{\rm Ca}$, ${\it ff}_{\rm H\alpha}$) & ... & 0.923  & 0.923  \\
&  Corr(${\it ff}_{\rm Ca}$, ${\it ff}_{\rm fil}$) &  ... & 0.524 & 0.524   \\
&  Corr(${\it ff}_{\rm H\alpha}$, ${\it ff}_{\rm fil}$) & ... & 0.520  & 0.520   \\[2pt]
\hline
Param. &  $C_{\rm Ca}$ & ... & 0.20  &  0.70  \\ 
&  $C_{\rm H\alpha}$ & ... & 0.13  & 0.35  \\
&  $C_{\rm fil}$ & ... &  0.30 &     0.20  \\ 
\hline
Constr. &  Corr($E_{\rm Ca}$, $E_{\rm H\alpha}$) & 0.805  &  0.805 & 0.913 \\
&  Slope($E_{\rm Ca}$, $E_{\rm H\alpha}$) & 0.267  &  0.268 &  0.260 \\
&  Ampl. $E_{\rm Ca}$ & 0.028 & 0.028  &  0.096   \\
&  Ampl. $E_{\rm H\alpha}$ & 0.012 & 0.013  &  0.027  \\
&  $\chi^2$ & ... & 0.0009 &  0.109 \\[2pt] 
\hline
\end{tabular}}
\medskip
Note1. The first 3 lines provide the correlation between the observed filling factors. The following set of lines gives the contrasts which have been used (either from a fit on from the literature). The last set of lines shows the constrains that can be used to either constrain the fit or, in the last column, to test the contrasts found in the literature, compared to the values expected from the Kitt Peak observations. 
\end{table}