\begin{table}%t1
\caption {\label{tab:depletion} Gas-phase abundance of calcium
with respect to solar Abundances.}
   %\centerline
 { \begin{tabular}[h]{cc}
      \hline \hline
Jet          & [Ca]$_{\rm gas}$/[Ca]$_{\rm solar}$$^{a}$  \\
\hline   
HH 111       & 0.21--0.52   \\
HH 1         & 0.25--0.79 \\
HH 83        & 0.53--1.57$^{*}$ \\
HH 24 A      & 0.40--0.69$^{*}$ \\
HH 24 E      & 0.62--0.85$^{*}$ \\
HH 24 C      & 0.52--0.82$^{*}$ \\
HH 34$^{b}$  & 0.3--1 \\
\hline 
Orion Cloud$^{c}$  & 0.01 \\
\hline 
      \end{tabular}}
\par
\smallskip
$^{a}$ (Ca/H) solar abundance from \citet{asplund05}: $2.04\times  10^{-6}$; 
$^{b}$~from \citet{podio06}; 
$^{c}$~(Ca/H) abundance estimated in the interstellar medium in Orion by 
\citet{baldwin91}: $2\times 10^{-8}$;  
$^{*}$ the values of [Ca]$_{\rm gas}$/[Ca]$_{\rm solar}$ for HH~83 and HH~24 have
been estimated assuming $A_{\rm V}=0$, thus they are upper limits to the real 
values.   
\par
\end{table}