\begin{table}%[ht]%T5
      %\centering
\par
 \caption{Values of $r_{\rm w}$ and $r_{\rm sp}$ for the sets
	of parameters that, for a given $\delta$, give the best fit to the
	observed B/C ratio. The mean square value~$\sqrt{\langle r^2 \rangle}$
	of the distance to the sources is also shown.
	}
	\label{last_table}     
	\begin{tabular}{ccccc}   \hline\hline
	    && $p$, $\bar{p}$ & B-CNO & Sub-Fe, Fe \\
	    && $\delta=0.35/0.6/0.85$& -- & --\\\hline\hline
	    $L=10$~kpc &  $r_{\rm w}$ (kpc) & $\infty$/5.17/1.6
	    &$\infty$/3.41/0.89 &$\infty$/3.26/0.83\\
	    & $r_{\rm sp}$ (kpc)& 33.5/10.2/4.0  & 4.21/1.07/0.35
	    &1.46/0.37/0.12\\
	    & $\sqrt{\langle r^2 \rangle}$(kpc)& 6.43/4.67/2.50 &
	    5.23/2.92/1.11 & 4.00/2.03/0.57\\
	    \hline
	    $L=6$~kpc &    $r_{\rm w}$ (kpc) & $\infty$/3.64/1.15
	    &$\infty$/2.40/0.64 &$\infty$/2.30/0.60\\
	    &$r_{\rm sp}$ (kpc)& 24.7/7.4/2.9  & 3.10/0.80/0.26
	    &1.08/0.27/0.09\\
	    & $\sqrt{\langle r^2 \rangle}$ (kpc)& 4.93/3.5/1.88&
	    3.96/2.18/0.82 & 2.99/1.63/0.54\\
	    \hline
	    $L=2$~kpc & $r_{\rm w}$ (kpc) & $\infty$/1.40/0.46
	    &$\infty$/0.92/0.26 &$\infty$/0.88/0.24\\
	    &$r_{\rm sp}$ (kpc)& 9.7/2.9/1.2  &1.21/0.31/0.10
	    &0.42/0.10/0.03 \\
	    & $\sqrt{\langle r^2 \rangle}$(kpc)& 2.07/1.44/0.78 &
	    1.63/0.87/0.33 & 1.21/0.57/0.19\\
	    \hline
	\end{tabular}
\end{table}