\begin{table}%t3
\caption {\label{Obs-par}Observed parameters of the $J=2\to 1$ line of SiO, and of the
$J=3\to 2$  and $J=1\to 0$ transitions of H$^{13}$CO$^+$ and HN$^{13}$C 
toward L1448-mm (0, 20), (20, 0) and (--20, 0).} 
%\centerline
 {\begin{tabular}{lccccccccc} \hline \hline
\noalign{\smallskip}
&  \multicolumn{3}{c}{(0, 20)} & \multicolumn{3}{c}{(20, 0)} & \multicolumn{3}{c}{(--20, 0)} \\ \cline{2-4} \cline{5-7} \cline{8-10}
& $V_{\rm LSR}$& $\Delta v$ & $T_{\rm A}^*$ &  $V_{\rm LSR}$& $\Delta v$ & $T_{\rm A}^*$ &  $V_{\rm LSR}$& $\Delta v$ & $T_{\rm A}^*$ \\
 Line &  (km s$^{-1}$) & (km s$^{-1}$) & (K) &  (km s$^{-1}$) & (km s$^{-1}$) & (K) &  (km s$^{-1}$) & (km s$^{-1}$) & (K) \\ \hline
SiO($2\to1$)\tablefootmark{a} & $\sim$$ 4.7$& \ldots & $\la$$0.027$\tablefootmark{b} & $\sim$$ 4.7$ & \ldots &$\la$$ 0.030 $&  $\sim$$ 4.7$ & \ldots &$\la$$ 0.036$ \\
& $\sim $$5.2 $ & \ldots & $\la $$0.027$& 5.07(6) & 0.5(1) & 0.04(1) & 5.29(4) & 0.51(7) & 0.06(1) \\
H$^{13}$CO$^+$($1\to 0$)\tablefootmark{a} & 4.597(3) & 0.625(7) & 0.75(2) & 4.645(4) & 0.590(9) & 0.74(2) & 4.606(3) & 0.87(2) & 0.49(3) \\
&5.126(0) & 0.82(1) & 0.57(2) & 5.254(0) & 0.89(1) & 0.68(2) & 5.318(1) & 0.72(1) & 0.85(3) \\
H$^{13}$CO$^+$($3\to 2$) & 4.5(1) & 0.5(3) & 0.20(6) & $\sim$$ 4.7$ & \ldots & $\la$$ 0.14$ & $\sim$$ 4.7$ & \ldots & $\la$$ 0.09$ \\
&  5.33(7) & 0.7(2) & 0.36(5) & 5.2(1) & 1.0(3) & 0.22(5) & 5.3(2) & 0.4(2) & 0.14(3) \\
HN$^{13}$C($1\to 0$)$^{{a}}$ & 4.625(6) & 0.80(1) & 0.52(1) & 4.6(1) & 0.8(1) & 0.57(1) & 4.89(1) & 0.86(2) & 0.84(1) \\
& 5.224(2) & 0.80(5) & 0.15(1) & 5.2(1) & 0.9(1) & 0.40(1) & 5.58(4) & 0.63(6) & 0.21(1) \\
HN$^{13}$C($3\to 2$) & $\sim$4.7 & \ldots & $\la $$0.07$ & $\sim $$4.7$ & \ldots & $\la$$ 0.075$ & $4.5$(2) & 0.7(2) & $0.09(2)$ \\
&$\sim $$5.2$ & \ldots & $\la $$0.07$ & $\sim$$ 5.2$ & \ldots & $\la$$ 0.075$ & $\sim$$ 5.2$ & \ldots & $\la $0.07  \\ 
\hline
\end{tabular}}
\par
\tablefoot{
\tablefoottext{a}{These molecular line transitions were taken from JS04.}
\tablefoottext{b}{The upper limits of the line intensities correspond 
to the $3\sigma$ noise level.}}
\end{table}