\begin{table}%t2
%\centering
\par
\caption{\label{tab:H2Ochara}Characteristics of water regions in Herbig Ae disk model.}
\small 
\begin{tabular}{cccccc}
\hline \hline
Region & $r$~[AU] & $z/r$ & $M_{\rm H_2O}~[M_{\rm Earth}]$&$\langle\Tg\rangle$~[K]
  & $\langle\Td\rangle$~[K]\\
\hline
  1   & 0.7--20  & $<$0.1  & 0.31 &  240  &  240 \\
  2   &  20--150 & $<$0.1 & $3.2\times 10^{~-5}$  & 38  &   37 \\
  3   &   1--30  & 0.1--0.3 & $1.1\times 10^{~-4}$  &  410  &  150 \\
\hline
\end{tabular}
\end{table}