\begin{table}%t1
%\centering
\par
\caption{Ages (in units of yr), metallicities and numbering convention 
for the star clusters in the base.\label{tab1}}
\begin{tabular}{ccccccccr}
\hline
\hline
HII& E7 & 5E7 & E8 &  5E8 &  E9 &  5E9 & E10&[$Z/Z_{\odot}$]\\
\hline
  35&    31&    27&    23&    19&    14&     8&     1&    0.6\\
  35&    32&    28&    24&    20&    15&     9&     2&    0.3\\
  35&    33&    29&    25&    21&    16&    10&     3&    0.0\\
  35&    34&    30&    26&    22&    17&    11&     4& $-$0.5\\
    &      &      &      &      &    18&    12&     5& $-$1.0\\
    &      &      &      &      &      &    13&     6& $-$1.5\\
    &      &      &      &      &      &      &     7& $-$2.0\\
\hline
\end{tabular}
\end{table}