\begin{table}%t2
\caption{Combinations of age indicators. The weight $w_i$ 
in Eq.~(\ref{e:1}) is given for each indicator.}
\label{t:2}
%\centering
\small
\begin{tabular}{l|rcccccccc} 
\hline\hline
 & \multicolumn{8}{c}{Indicator set} \\
 Indicator & A & B & C & D & E & F & BC & EF & S \\ 
 \hline
   \dvtohb & 1 & 1 & 1 & 1 & 1 & 1 & 1 & 1 & 1 \\
   \dvtobhb  & 1 & 1 & 1 &1 &1 &1 &1 & 1 & 1 \\
   \dvtofhb & 1 & 1&1 &1 &1 &1 &1 & 1 & 1 \\
   \dvtobump & 0 & 1 &0 &0 &0 &0 &1 &0 & 1 \\
   \dvhbbp & 0 & 0 &1 &0 &0 &0 &1 &0 & 1 \\
   \dvtotip & 0 & 0& 0 &1 &0 & 0& 0& 0 & 1 \\
   \dctorgb & 0 & 0 &0 &0 & 1 &0 &0 &1 & 1 \\
   \dctobp & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 1 & 1 \\ 
   \hline
\end{tabular}
\end{table}