\begin{table} %t4
\caption{\label{ypc}Observations from the Fourth Yale Parallax Catalogue for the
determination of the parallax of 1716+020.}
%\centering
\par
\begin{tabular}{ccc}
\hline   \hline    \noalign{\smallskip}
Observatory  & 1716+020 & LHS3279  \\
\noalign{\smallskip}\hline \noalign{\smallskip} 
Lick  &  $24.4 \pm 0.9$&$33.2 \pm 0.7$\\
Sproul  &$13.9 \pm 1.4$&$45.9 \pm 1.6$\\
USNO  &  $24.2 \pm 0.4$&$31.4 \pm 0.4$\\
OATo &   $19.0 \pm 2.3$&$21.6 \pm 1.3$\\
\hline \\
\end{tabular}
\end{table}