\begin{table}%t2
\caption{\label{tab:Observations-table}Observed numbers of EMP, CEMP, CNEMP and NEMP~stars from the SAGA~database for our various selection criteria.}
\small%\centerline
 {
\begin{tabular}{ccccccccl}
\hline \hline\noalign{\smallskip}
Metallicity & $\log g$ & EMP & CEMP & CNEMP & NEMP &  & CEMP/EMP &  Additional selection criteria  \\
$[{\rm Fe}/{\rm H}]$ &  &  &  &  & $[{\rm N}/{\rm Fe}]>1$ & $[{\rm N}/{\rm Fe}]>0.5$ & fraction & \\
\hline
$-2.3\pm0.5$ & ${\leq}4$ & 308 & 96 &  &  &  & 31\% & only stars with C measured   \\
$-2.3\pm0.5$ & ${\leq}4$ & 373 & 96 &  &  &  & 26\% & all EMP stars \\
$-2.3\pm0.5$ & ${\leq}4$ & 104 & 88 & 0 & 0 & 7 &  & only stars with C and N measured \\
$-2.3\pm0.5$ & ${\leq}4$ & 373 & 96 & 0 & 0 & 7 & 26\% & $\left\{ \begin{array}{c} {\rm C~ and~ N~ measured~ for~(C)NEMPs,}\\
{\rm C~ measured~ for~ CEMPs},\end{array}\right.$ \\[3pt]
all & ${\leq}4$ & 779 & 144 & 4 & 14 & 22 & 18\% & $''$  \\
$-2.3\pm0.5$ & all & 479 & 115 & 0 & 0 & 7 & 24\% & $''$  \\
all & all & 1366 & 177 & 6 & 17 & 23 & 13\% & $''$  \\
\hline
${\leq}2.0$ & giants & 132 & 11 &  &  &  & $9\pm2\%$ & \citet{2006ApJ...652.1585F}\\
${\leq}2.0$ &  & 270 & 58 &  &  &  & ${>}21\pm2\%$ & \citet{2006ApJ...652L..37L}\\
${\leq}2.0$ & giants &  &  &  &  &  & $14\pm4\%$ & \citet{2005ApJ...633L.109C}\\
\hline
\end{tabular}}
\medskip
The first line of data counts only stars which have a $[{\rm C}/{\rm Fe}]$~measurement. The second line of data additionally counts stars \emph{without} measured $[{\rm C}/{\rm Fe}]$ as~EMPs, i.e.~it~is assumed that $[{\rm C}/{\rm Fe}]<1$ for these stars. In the next four lines stars with both measured~C and~N are used to count (C)NEMP~stars while stars with C~measured count the CEMP~stars. \\
Also shown are estimates of the CEMP/EMP ratio from \citet{2005ApJ...633L.109C}, \citet{2006ApJ...652.1585F} and \citet{2006ApJ...652L..37L}.
\end{table}