\begin{table}%tD.3
\caption{\label{HH54vrad1:tab}Radial velocities and line intensities for different optical lines of individual knots in HH~54 from EMMI and B\&C~spectra. Radial velocities are corrected for the cloud speed with respect to the LSR ($v_{\rm LSR}$~= 2~km~s$^{-1}$, Knee \cite{knee}). When detected, two
velocity components are reported.}


\small%\centerline
 {
\begin{tabular}{ccccc}
\hline \hline
\multicolumn{5}{c}{HH~54}\\ 
Knot  & Line & $\lambda$ & $v_{\rm rad}$      & $F\pm\Delta~F$      \\
      & Id.     &   ($\AA$)    & (km~s$^{-1}$) & ($10^{-15}$ erg~s$^{-1}$~cm$^{-2}$)\\
\hline
\multicolumn{5}{c}{EMMI}\\
C2    &  [\ion{O}{i}]  & 6300.3   & $-$40 $\pm$ 4      & 6.4 $\pm$ 0.3  \\
      &  [\ion{O}{i}]  & 6363.8   & $-$43 $\pm$ 4      & 2.8 $\pm$ 0.3  \\
      &  [\ion{N}{ii}] & 6548.1  & $-$47 $\pm$ 4      & 2.2 $\pm$ 0.2  \\
      &  H$\alpha$     & 6562.8   & $-$52 $\pm$ 4      &13.9 $\pm$ 0.3  \\
      &  [\ion{N}{ii}] & 6583.4  & $-$44 $\pm$ 4      & 6.5 $\pm$ 0.2  \\
      &  [\ion{S}{ii}] & 6716.4  & $-$46 $\pm$ 4      &8.9 $\pm$ 0.2  \\
      &  [\ion{S}{ii}] & 6730.8  & $-$46 $\pm$ 4      &8.9 $\pm$ 0.2  \\
C3    &  [\ion{O}{i}]  & 6300.3   & $-$12 $\pm$ 4      & 1.5 $\pm$ 0.1  \\
      &  [\ion{O}{i}]  & 6363.8   & $-$17 $\pm$ 4      & 0.7 $\pm$ 0.2  \\
      &  [\ion{N}{ii}] & 6548.1  & $-$16 $\pm$ 4      & 0.4 $\pm$ 0.1  \\
      &  H$\alpha$     & 6562.8  & $-$19 $\pm$ 4      & 2.8 $\pm$ 0.1  \\
      &  [\ion{N}{ii}] & 6583.4  & $-$20 $\pm$ 4      & 1.6 $\pm$ 0.1  \\
      &  [\ion{S}{ii}] & 6716.4  & $-$17 $\pm$ 4      & 1.7 $\pm$ 0.1  \\
      &  [\ion{S}{ii}] & 6730.8  & $-$22 $\pm$ 4      & 1.8 $\pm$ 0.1  \\
G$-$G0  &  [\ion{O}{i}]  & 6300.3   & $-$71 $\pm$ 4; $-$24 $\pm$ 4 & 0.4 $\pm$ 0.1; 0.6 $\pm$ 0.1 \\
      &  [\ion{N}{ii}] & 6548.1  & -- & 0.5 $\pm$ 0.2; -- \\
      &  H$\alpha$     & 6562.8   & $-$80 $\pm$ 4; $-$15 $\pm$ 4 & 3.0 $\pm$ 0.1; 0.5 $\pm$ 0.1 \\
      &  [\ion{N}{ii}] & 6583.4  & $-$73 $\pm$ 4; $-$15 $\pm$ 4 &   0.8 $\pm$ 0.1; 0.6 $\pm$ 0.1  \\
      &  [\ion{S}{ii}] & 6716.4  & $-$78 $\pm$ 4; $-$17 $\pm$ 4 &   1.0 $\pm$ 0.2; 0.6 $\pm$ 0.2  \\
      &  [\ion{S}{ii}] & 6730.8  & $-$79 $\pm$ 4; $-$21 $\pm$ 4 &   1.0 $\pm$ 0.2; 0.5 $\pm$ 0.2  \\
G1$-$G3$^{a}$ &  [\ion{O}{i}]  & 6300.3   & $-$86 $\pm$ 4; $-$18 $\pm$ 4 & 1.9 $\pm$ 0.1; 2.5 $\pm$ 0.1 \\
      &  [\ion{O}{i}]  & 6363.8   &   --     & 0.6 $\pm$ 0.2; 0.8 $\pm$ 0.2 \\
      &  [\ion{N}{ii}] & 6548.1  & -- & 0.6 $\pm$ 0.2; 1.0 $\pm$ 0.3 \\
      &  H$\alpha$     & 6562.8  & $-$82 $\pm$ 4; $-$24 $\pm$ 4 &   5.6 $\pm$ 0.3; 5.0 $\pm$ 0.3  \\
      &  [\ion{N}{ii}] & 6583.4  & $-$86 $\pm$ 4; $-$20 $\pm$ 4 &   1.2 $\pm$ 0.2; 2.1 $\pm$ 0.2  \\
      &  [\ion{S}{ii}] & 6716.4  & $-$89 $\pm$ 4; $-$20 $\pm$ 4 &   2.6 $\pm$ 0.2; 2.3 $\pm$ 0.2  \\
      &  [\ion{S}{ii}] & 6730.8  & $-$91 $\pm$ 4; $-$22 $\pm$ 4 &   1.6 $\pm$ 0.2; 2.0 $\pm$ 0.1  \\
\hline
\multicolumn{5}{c}{B\&C slit~3}\\
X1D$-$X4C & [\ion{O}{i}] & 6300.3   & $-$34 $\pm$ 30     & 6.5 $\pm$ 1.3  \\
      &  H$\alpha$     & 6562.8   & $-$70 $\pm$ 30     & 40.5 $\pm$ 2.8  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$58 $\pm$ 30     & 5.4 $\pm$ 2.0  \\
      &  [\ion{S}{ii}] & 6716.4   & $-$61 $\pm$ 30     & 6.6 $\pm$ 0.6  \\
      &  [\ion{S}{ii}] & 6730.8   & $-$67 $\pm$ 30     & 6.3 $\pm$ 2.5  \\
X1A   &  H$\alpha$     & 6562.8   & $-$70 $\pm$ 20     & 4.5 $\pm$ 0.1  \\
X3    &  [\ion{O}{i}]  & 6300.3   & $-$40 $\pm$ 20     & 1.6 $\pm$ 0.1  \\
      &  H$\alpha$     & 6562.8   & $-$42 $\pm$ 20     & 9.9 $\pm$ 0.1  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$65 $\pm$ 20     & 1.1 $\pm$ 0.1  \\
      &  [\ion{S}{ii}] & 6716.4   & $-$53 $\pm$ 20     & 2.0 $\pm$ 0.2  \\
      &  [\ion{S}{ii}] & 6730.8   & $-$34 $\pm$ 20     & 1.3 $\pm$ 0.2  \\
X4A$-$X4B &  H$\alpha$   & 6562.8   & $-$115 $\pm$ 20    & 11.8 $\pm$ 0.2  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$110 $\pm$ 20    & 0.8 $\pm$ 0.2  \\
      &  [\ion{S}{ii}] & 6716.4   & $-$92 $\pm$ 20     & 1.8 $\pm$ 0.2  \\
      &  [\ion{S}{ii}] & 6730.8   & $-$82 $\pm$ 20     & 1.9 $\pm$ 0.2  \\
\hline
\end{tabular}}
\medskip
Notes: $^{a}$ Blend of knots G1$-$G3.
\end{table}