\begin{table}%t2 \caption {\label{abuntablesgba}Basic data for SGB-a stars studied in this paper. } \begin{tabular}{cccccc} \hline \hline \noalign{\smallskip} ID & RA & Dec. & A(Li) & $S/N$ & \teff (K) \\ \hline 120117 &13:27:15.18 &--47:29:52.13 & $<$1.50 &38 &5654\\ 213295 &13:26:42.67 &--47:32:54.29 & $<$1.42 &32 &5490\\ 213952 &13:26:23.23 &--47:32:45.23 & $<$1.23 &45 &5479\\ 215700 &13:26:30.16 &--47:32:21.81 & $<$1.33 &44 &5542\\ 216031 &13:26:27.23 &--47:32:17.22 & $<$1.00 &33 &5081\\ 223861 &13:26:22.04 &--47:30:31.76 & $<$1.36 &51 &5330\\ 224921 &13:27:08.47 &--47:30:15.98 & $<$1.39 &37 &5528\\ 243327 &13:26:32.84 &--47:26:03.91 & $<$0.92 &46 &5148\\ 247798 &13:26:31.46 &--47:25:03.30 & $<$1.30 &44 &5503\\ 248814 &13:27:05.20 &--47:24:48.71 & $<$1.28 &43 &5465\\ \hline \end{tabular} \tablefoot{For each star, we report ID, coordinates, and the derived upper limits to the lithium abundances. The spectra signal-to-noise and the H$_\alpha$-based effective temperatures are also reported. A metallicity of [Fe/H]\,=\,--1.5 was assumed. } \end{table}