\begin{table}%t1
%\centering
\par
\caption{The data sets used in the orbital solution.}\label{t1}
\small
\begin{tabular}{ccccc}\hline\hline
Data Set  &  Coverage & Technique & $N$ & $\sigma_{RV}$  \\
  &           &           &   &               (m~s$^{-1}$) \\
\hline
CFHT                 & 1980.87--1991.87 & HF cell      & 24      & 20.3 \\
DAO                  & 1985.28--1993.05 & HF cell      & 25      & 37.7 \\
McD-2.1~m             & 1988.73--1992.20 & Iodine Cell  & 31      & 18.9  \\
McD-MOPS             & 1998.69--2000.03 & Iodine Cell  & 22      & 11.6  \\
McD-cs21             & 2000.03--2004.58 & Iodine Cell  & 11      & 16.7  \\
TLS-TOPS             & 2003.04--2006.06 & Iodine Cell  & 22      & 11.0  \\
\hline
\end{tabular} 
\end{table}