\begin{table}%t3
%\centering
\par
\caption{\label{ausgleich}Values for the constants $a$ and $b$ in the formula~\ref{logperiod} for the three investigated systems (see Fig.~\ref{syst2}) as well as the errors from the least square fit.}
\begin{tabular}[h]{lcc}
\hline\hline
& $a$ & $b$\\
\hline
System 3 & 1.1232 $\pm$ 0.0925 & $-$0.1112 $\pm$ 0.4497\\
System 4 & 1.1504 $\pm$ 0.1256 & $-$0.2729 $\pm$ 0.6105\\
System 5 & 0.9972 $\pm$ 0.1126 & 0.3530 $\pm$ 0.5413\\
\hline
\end{tabular}
\end{table}