\begin{table}%t2
\caption{C stars in NGC 147$^{{a}}$.}\label{tab2}
%\centerline
{
\begin{tabular}{ccccccccc}
\hline
\hline
id & RA & Dec & $I$ & $\sigma_I$ & $R-I$ & $\sigma_{R-I}$ & CN--TiO & $\sigma_{{\rm CN-TiO}}$  \\
\hline
1 &$00:31:29.13$&  $48:17:28.00$& 20.650&  0.019&  1.481&  0.040&  0.337&  0.056\\
2 &$00:31:31.60$&  $48:35:31.80$& 20.265&  0.013&  1.127&  0.021&  0.489&  0.044\\
3 &$00:31:58.03$&  $48:21:38.80$& 20.211&  0.014&  1.174&  0.023&  0.414&  0.042\\
4&$00:32:02.42$&  $48:39:23.20$& 20.668&  0.019&  1.244&  0.033&  0.352&  0.068\\
5&$00:32:09.53$&  $48:30:35.80$& 20.057&  0.011&  1.076&  0.018&  0.559&  0.037\\
6&$00:32:11.93$&  $48:31:02.00$& 19.665&  0.010&  1.141&  0.016&  0.519&  0.032\\
7&$00:32:13.61$&  $48:26:58.00$& 20.442&  0.015&  1.185&  0.028&  0.500&  0.037\\
8&$00:32:16.89$&  $48:26:41.70$& 20.745&  0.020&  1.458&  0.046&  0.362&  0.072\\
9&$00:32:18.10$&  $48:21:08.10$& 20.298&  0.016&  1.388&  0.030&  0.499&  0.040\\
10&$00:32:19.26$&  $48:22:31.30$& 19.960&  0.015&  1.271&  0.022&  0.511&  0.039\\
11&$00:32:20.56$&  $48:23:58.20$& 21.420&  0.029&  1.531&  0.077&  0.384&  0.056\\
12&$00:32:21.48$&  $48:38:18.50$& 20.054&  0.013&  1.090&  0.021&  0.639&  0.033\\
13&$00:32:23.23$&  $48:18:46.50$& 20.029&  0.014&  1.214&  0.024&  0.679&  0.040\\
\hline
\end{tabular}}
\medskip
$^{{a}}$ A portion of Table~\ref{tab2} is shown here for guidance regarding its form and content. Units of right ascensions are hours, minutes and seconds, and units of declination are degrees, arcminutes and arcseconds. Full Table 2 is only available in electronic form at the CDS via anonymous ftp to {\tt cdsarc.u-strasbg.fr (130.79.128.5)} or via {\tt http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/418/33}.
\end{table}