\begin{table}%t4
\caption{\label{dispairmass}The measured dispersion for data-sets with restricted airmass, for time-spans of 1--8~days and the whole data-set.}
\par
%\centering
\par
\begin{tabular}{lccccc} \hline\hline
\noalign{\smallskip}
 \ \ Target & Data-set [d]   &  $\sigma_{(X<1.5)}$  &  $\sigma_{(X<1.2)}$  & $\sigma_{(X<1.1)}$~[m/s]  \\[-3.2mm]  \\
 \hline
Tau~Ceti & 1  & 4.53 &   3.38 &   2.41\\
 & 2  & 5.53 &   4.07 &   3.27 \\
& 3  & 5.81 &   4.55 &   3.70 \\
& Full & 9.77 &   9.16 &   8.43 \\
\hline
$\mu$~Ara & 1 &   5.00 &   3.36 &   2.31 \\
& 2 &   6.18 &   4.14 &   2.61 \\
& 3 &   6.38 &   4.27 &   2.66 \\
& 4 &   5.67 &   3.86 &   2.39 \\
& 5 &   5.67 &   4.01 &   2.57 \\
& 6 &   6.18 &   4.71 &   3.24 \\
& 7 &   6.46 &   4.93 &   3.40 \\
& 8 &   6.94 &   5.42 &   3.91 \\
& Full &   9.88 &  10.10 &  10.23 \\
\hline
$\epsilon$~Eri & Full & 10.82 &  10.55 &   9.61 \\
\hline
\end{tabular}
\vspace*{5mm}
\end{table}