\begin{table}%t1
%\centering
\par
\caption{Our sample.}
\label{tsample}
\begin{tabular}{llll}
\hline
\hline
Star       & $T_{\rm eff}$ & $v \sin i$ & $W_\lambda$ \ion{K}{i} \\
             &      (K)                    &  (${\rm km~s}^{-1}$) &
(\AA) \\
\hline
AP33     & 4836  & 9 & 0.38 \\
AP37     & 4977  &  29 & 0.34 \\
AP43     & 4840  &  72 & 0.43 \\
AP56     & 4801   & 110 & 0.41  \\
AP65     & 4798   & 10 & 0.35 \\
AP70     &  4886  &  9 & 0.35  \\
AP72     & 4911   & 9 & 0.31 \\
AP78     & 4775   &  13 & 0.46 \\
AP91     & 4837   & 25 & 0.40 \\
AP93     & 4873   & 75 & 0.50 \\
AP98     & 4912   & 9 & 0.37 \\
AP106   & 4847   & 9 & 0.33 \\
AP110   & 5087   & 9 & 0.33 \\
APX1     & 5091   &  13 & 0.33 \\
APX27A  &  5009  &  50 & 0.45 \\
APX49A  &  4795  &  21 & 0.32  \\
APX59   &  4957   &  38 & 0.34 \\
APX72    & 4893   & 16 & 0.32 \\
APX158   & 5001   & 170 & 0.47\\
\hline
\end{tabular}
\end{table}