\begin{table}%T3
%\centering
\small
\caption{An overview of the datasets used to derive the properties of the binary population in \sco{}. Columns~$1$--$3$ list the dataset acronym, the reference, and the type of binary studied in the dataset. Columns~4 and~5 list the number of targets in the original dataset, and the number of companions found for these targets. Columns~6 and~7 list the number of targets and companions used in our analysis. This dataset is smaller than the original dataset, as we do not include the non-members of \sco{} in our analysis and at most one companion per targeted star in the case of a multiple systems. The datasets partially overlap, which is taken into account when these are combined in the following sections. We list in this table the total number of spectroscopic binaries, including the radial velocity variables (RVVs; irrespective of their true nature), SB1s, and SB2s. For the \hipp{} observations we list the number of entries in the categories (X), (O), (G), (C), and (S), among the confirmed members of \sco{}. \label{table:observations_overview}}
  \begin{tabular}{lll rr rr}
    \hline
    \hline
    Abbreviation & Reference & Dataset & $N_{\rm orig}$ & $B_{\rm orig}$ & $N_{\rm used}$ & $B_{\rm used}$ \\[-3.2mm]\\
    \hline
    KO5    & \cite{kouwenhoven2005}   & Visual         & 199 & 74 & 199 & 60 \\
    KO6    & \cite{kouwenhoven2007a}  & Visual         & 22  & 29 & 22  & 18 \\
    SHT    & \cite{shatsky2002}       & Visual         & 115 & 25 & 87  & 23 \\
    LEV    & \cite{levato1987}        & Spectroscopic  & 81  & 61  & 53  & 39 \\
    BRV    & \cite{brownverschueren}  & Spectroscopic  & 156 & 91  & 71  & 47 \\
    HIP    & \cite{hipparcos}         & Astrometric/Visual & 521 & 125 & 521 & 125 \\
    \hline
  \end{tabular}
  \end{table}