\begin{table}%tA.2 \caption{INDO-US to Lick/IDS transformation.} \label{I2L} \small%\centerline { \begin{tabular}{c c c c} \hline \hline Index & Slope ($m$) & Intercept ($q$) & rms \\ \hline H$\beta$ & 1.01 & 0.13 & 0.25 \\ Mg$b$ & 0.89 & 0.32 & 0.35 \\ Fe5270 & 0.97 & 0.12 & 0.29 \\ Fe5335 & 1.01 & 0.08 & 0.32 \\ H$\gamma_{\rm A}$ & 1.01 & --0.15 & 0.71 \\ H$\delta_{\rm A}$ & 0.98 & --0.02 & 0.83 \\ H$\gamma_{\rm F}$ & 1.01 & --0.10 & 0.43 \\ H$\delta_{\rm F}$ & 0.98 & 0.14 & 0.51 \\ \hline \end{tabular}} \medskip The calibrated index is $i_{\rm Lick/IDS}=m$~$\times$ ${i_{\rm INDO-US}}+q$; the rms is calculated on the basis of $\sim$150~stellar spectra. \end{table}