\begin{table}%t4
\caption{\label{t:bump}Adopted values of $V_{\rm bump}$.}
%\centerline
{\small
\begin{tabular}{cccc}
\hline\hline
GC & $V_{\rm bump}$  & $\pm$ & Reference \\
\hline
NGC~0288 &15.45 &0.05 & 1 \\
NGC~1904 &16.00 &0.04 & 2 \\
NGC~3201 &14.55 &0.05 & 1 \\
NGC~4590 &15.15 &0.05 & 1 \\
NGC~5904 &15.00 &0.05 & 1 \\
NGC~6121 &13.40 &0.10 & 1 \\
NGC~6171 &15.85 &0.05 & 1 \\
NGC~6218 &14.60 &0.07 & 1 \\
NGC~6254 &14.65 &0.05 & 1 \\
NGC~6397 &12.60 &0.10 & 3\\
NGC~6752 &13.65 &0.05 & 1 \\
NGC~6809 &14.15 &0.05 & 1 \\
NGC~6838 &14.80 &0.15 & 1 \\
NGC~7078 &15.25 &0.05 & 1 \\
\hline
\end{tabular}}
\tablebib{(1) \cite{ferraro99}; (2) \cite{zoccali99}; (3) \cite{as99}.}
\end{table}