\begin{table}%t1
  \caption{\label{tab:kd}Atomic parameters of the three lines used for polarimetry;
$g_{\rm eff}$~=~effective Land\'e factor, $\chi _{\rm low}$~=~lower excitation 
potential, $g$~=~statistical weight, $f$~=~oscillatory strength.}
%\centering
\par
  \begin{tabular}{lcccc}
\hline\hline
Element & $\lambda$ [\AA] & $g_{\rm eff}$ & $\chi _{\rm low}$ [eV]  & log($gf$)\\
\hline
 Fe I & 10783.040  & 1.5  & 3.111 & $-$2.712\\
 Si I& 10784.551 & 0.92 & 5.964 & $-$0.593\\
 Si I& 10786.851 & 1.5  & 4.930 & $-$0.305\\
 \hline
   \end{tabular}
\end{table}