\begin{table}%t4
\caption{\label{tab:zeropoints}Correction terms of the transformation to the Lick/IDS standard system: $I_{\rm Lick}=I_{\rm measured}+c$.}
%\centering
\small
\begin{tabular}{lrccr} 
\hline \hline
Index       & $c$          & rms error & Index range& Units \\ 
\hline
CN1         & $-$0.060   & 0.033 &  [--0.07--0.4]   & mag    \\
CN2         & $-$0.016   & 0.013 &  [--0.05--0.4]    & mag    \\
Ca4227      & $-$0.06    & 0.154&   [0.17 -- 2.5]    &  \AA   \\
G4300       & 0.23       & 0.219&   [5.2--7.0]     &  \AA   \\
Fe4384      & $-$0.08    & 0.267&   [2.3--4.0]     &  \AA   \\
Ca4455      & 0.65       & 0.299&   [1.0--9.1]     &  \AA   \\
Fe4531      & $-$0.07    & 0.609&   [1.0--5.2]     &  \AA   \\
Fe4668      &    0.20    & 0.773&   [0.2--10.4]    &  \AA   \\
H$\beta$    &$-$0.30     & 0.472&   [0.8--1.1]     &  \AA   \\
Fe5015      & 0.30       & 0.755&   [1.6--7.3]     &  \AA   \\
Mg$_1$      & $-$0.002   & 0.029&   [--0.01--0.21]   &  mag    \\
Mg$_2$      & 0.020      & 0.077&   [0.01--0.36]   &  mag    \\
Mgb         & 0.10       & 0.400&   [0.3--3.9]     & \AA  \\
Fe5270      & 0.22       & 0.746&   [0.7--4.3]     & \AA  \\
Fe5335      & 0.40       & 0.700&   [0.1--3.9]     & \AA  \\
Fe5406      &  0.20      & 0.518&   [0.2--2.9]     & \AA  \\
H$\delta_A$ & $-$0.74    & 0.841&   [--7.6--0.6]     & \AA  \\
H$\gamma_A$ & $-$0.06    & 0.026&   [--11.6--$-$3.6]     & \AA  \\
H$\delta_F$ &  $-$0.30   & 0.076&   [--2.1--1.1]     &  \AA  \\
H$\gamma_F$ &  $-$0.07   & 0.154&   [--3.5--$-$0.7]     &  \AA  \\
\hline
\end{tabular}
\end{table}