\begin{table}%t2
\caption{\label{t:class_n6253}Inventory  of the variables found in NGC~6253 and its surrounding area.}
%\centering
\small
\begin{tabular}{lcccc}
\hline\hline
\noalign{\smallskip}
     Type   &\multicolumn{4}{c}{Number of variables}\\
            & all chips   & $r<8\arcmin$ & candidate & probable \\
            &             &              & members   & members \\
         \hline
RR~Lyrae       & 4   & 1          &  0   & 0 \\  
$\delta$ Scuti & 11  & 0          &  0   & 0   \\ 
$\beta$ Cep    & 1   & 0          &  0   & 0   \\ 
HADS           & 4   & 0          &  0   & 0   \\ 
EW-type        & 225 & 50         &  16  & 8   \\ 
EB-type        & 22  & 6          &  2   & 0   \\ 
EA-type        & 59  & 13         &  5   & 1   \\ 
RS~CVn         & 18  & 4          &  2   & 1   \\ 
U~Geminorum    & 1   & 1          &  1   & 1   \\ 
Rotationals    & 77  & 27         &  16  & 15   \\ 
Long period    & 173 & 41         &  16  &  9   \\ 
\hline
\end{tabular}
\end{table}