\begin{table}%t2
\caption{Results of the radial velocity curve fits. Left block: results
  from the inversion based $\chi^2$-minimization. Right block: results
  from the genetic algorithm optimization. The blocks give the best fit
  value and lower and higher limits. Note that the 3~$\sigma$ deviation of
  the \texttt{pikaia} fits are smaller than 1\%.}
%%%%\centering
\par
\begin{tabular}{lccc|c}
\hline  \hline
parameter\rule{0cm}{4mm} & \multicolumn{3}{c|}{$\chi^2$} &
\multicolumn{1}{c}{\texttt{pikaia}} \\ 
          & best & $-$3 $\sigma$ & +3 $\sigma$ & best \\ 
\hline
amplitude [km~s$^{-1}$] & 0.10 & 0.08 & 0.13 & 0.12 \\
phase               & 0.02 & 0.99 & 0.04 & 0.94 \\
offset      [km~s$^{-1}$] & 0.05 & 0.04 & 0.06 & 0.05 \\
\hline
\label{Tresults}
\end{tabular}
\end{table}