\begin{table}%t2
\caption{Parameters of the one-dimensional distributions.\label{tab2}}
%\centerline
{\begin{tabular}{lccc}
\hline\hline
&\multicolumn{3}{c}{Reduced sample GCs}\\
\cline{2-4}\\
&All&Metal-poor&Metal-rich\\
(1)&(2)&(3)&(4)\\
\hline
$x_{\rm o}~\rm (kpc)$& $7.2\pm0.3$&$7.1\pm0.5$&$7.7\pm0.3$\\
$x_{\rm h}~\rm (kpc)$& $2.9\pm0.4$&$2.9\pm0.6$&$2.7\pm0.4$ \\
$y_{\rm o}~\rm (kpc)$& $0.0\pm0.3$&$0.0\pm0.4$&$0.1\pm0.3$ \\
$y_{\rm h}~\rm (kpc)$& $1.9\pm0.4$&$2.8\pm0.5$&$2.1\pm0.4$\\
$z_{\rm o}~\rm (kpc)$& $0.1\pm0.2$&$0.4\pm0.3$&$0.1\pm0.1$ \\
$z_{\rm h}~\rm (kpc)$& $1.8\pm0.2$&$2.7\pm0.5$&$1.1\pm0.1$ \\
$x_{\rm h}/\rm y_h$& $1.5\pm0.4$&$1.0\pm0.3$&$1.3\pm0.3$ \\
$x_{\rm h}/z_{\rm h}$& $1.6\pm0.3$&$1.1\pm0.3$&$2.4\pm0.4$ \\
$y_{\rm h}/z_{\rm h}$& $1.1\pm0.3$&$1.0\pm0.2$&$1.9\pm0.4$ \\
\hline
\end{tabular}}
\par
\smallskip
Notes.
Parameters of the function $\rm\phi(\xi)\propto e^{-\left|\frac{\xi-\xi_o}{\xi_h}\right|}$ 
fitted to the $\xi=(x,y,z)$ distribution functions. Column~(2): all GCs of the reduced sample.
\par
\end{table}