\begin{table}%t5
 \caption{\label{table5}The results of the statistical analysis. The values of
median, skewness, kurtosis-excess are indicated for each set of
metallicity measurements, in each field (C for M92C and W for
M92W). The values listed in  Cols.~4 and~6 give the limit for
the 
skewness and the kurtosis-excess to be considered significantly equal
to zero (see the text).}
\small%\centering
\par
\begin{tabular}{ccccrc}
 \hline\hline
{\it UV} excess&median&{\it sk.}&lim$_{sk}$&{\it k-ex.}& lim$_{ku}$ \\
 \hline 
$\delta$$(X-Y$)C&--1.97&0.16&0.22&0.20&0.87 \\ 
$\delta$$(P-Y)$C&--2.26&0.36&0.20&2.30&0.80 \\ 
$\delta$$(P-X)$C&--2.94&0.16&0.23&--0.05&0.91 \\
 \hline
$\delta$$(X-Y)$W&--2.08&0.00&0.46&0.83&1.80 \\ 
$\delta$$(P-Y)$W&--1.88&0.12&0.46&--0.15&1.80 \\ 
$\delta$$(P-X)$W&--2.12&0.92&0.50&0.15&2.01 \\ 
\hline
\end{tabular}
\end{table}