\begin{table}%t1
\caption{\label{table measurements}Measurements derived from the spectra.}
\small%\centerline
{
\begin{tabular}{lcccccc} 
\hline\hline
                                                                                  & \multicolumn{2}{c}{M4}   & \multicolumn{2}{c}{M5}   & \multicolumn{2}{c}{M6} \\ 
%\hline
                                                                              & \multicolumn{2}{c}{value}& \multicolumn{2}{c}{value}& \multicolumn{2}{c}{value} \\ 
                                                                                   & low        & high       & low        & high       & low        & high      \\ 
 \hline
\multicolumn{7}{c}{position with respect to AGN [arcsec]}\\
                                                            $\Delta\alpha$~[arcsec]&       0.31 &       0.51 &       2.70 &       2.90 &       4.70 &       4.90 \\ 
                                                            $\Delta\delta$~[arcsec]&       7.02 &       7.22 &       9.76 &       9.96 &       6.80 &       7.00 \\
%\hline 
\multicolumn{7}{c}{flux densities [mJy]}\\
                                                                                $R$  &\multicolumn{2}{c}{$\le$0.10} &       0.13 &       0.19 & \multicolumn{2}{c}{$\le$0.05} \\ 
                                                                                $J$  &\multicolumn{2}{c}{$\le$1.21} &       0.79 &       1.88 & \multicolumn{2}{c}{$\le$1.01} \\ 
                                                                                $K$s &\multicolumn{2}{c}{$\le$1.18} &       0.62 &       1.47 &       0.31 &       1.29 \\ 
                                                                                $L'$ &       0.28 &       3.80 &       0.69 &       3.87 &       1.81 &       7.16 \\ 
%                                                                                $M$  &       0.80 &       3.27 &\multicolumn{2}{c}{$\le$4.40} &       2.82 &       6.25 \\ 
                                                                      10.4\micro~  &       0.57 &       3.94 &      41.33 &      62.90 &      37.18 &      57.01 \\ 
                                                                      11.9\micro~  &      20.10 &      47.26 &      78.76 &     130.16 &     109.15 &     169.90 \\ 
                                                                      12.9\micro~  &      91.97 &     169.03 &     208.83 &     341.28 &     379.61 &     575.43 \\ 
                                                                      12.8\micro~  &      77.24 &     128.32 &     183.10 &     287.64 &     264.64 &     421.92 \\ 
                                                                              6~cm  &       2.38 &       2.98 &       1.12 &       1.72 &       2.45 &       3.05 \\ 
                                                                             20~cm  &       3.04 &       3.64 &       2.44 &       3.04 &       2.24 &       2.84 \\ 
%\hline
\multicolumn{7}{c}{line fluxes [10$^{-15}$~erg~s$^{-1}$~cm$^{2}$]}\\
                                           \Pa                                     &      23.18 &      34.76 &      64.64 &      96.96 &      60.43 &      90.65 \\ 
                                           \Bd                                     &       1.23 &       1.84 &       3.40 &       5.10 &       3.48 &       5.22 \\ 
                                   \HH~1-0S(3)                                     &       0.71 &       1.07 &       0.96 &       1.44 &       1.29 &       1.94 \\ 
                                   \HH~1-0S(2)                                     &       0.36 &       0.54 &       0.37 &       0.56 &       0.44 &       0.66 \\ 
                                           HeI                                     &       0.86 &       1.29 &       1.85 &       2.77 &       2.44 &       3.67 \\ 
                                   \HH~1-0S(1)                                     &       1.06 &       1.59 &       1.02 &       1.53 &       1.13 &       1.70 \\ 
                                           \Bg                                     &       2.71 &       4.06 &       5.87 &       8.81 &       6.84 &      10.26 \\ 
                                   \HH~1-0S(0)                                     &       0.38 &       0.57 &       0.43 &       0.64 &       0.52 &       0.78 \\ 
                                   \HH~2-1S(1)                                     &       0.27 &       0.40 &       0.31 &       0.47 &       0.31 &       0.46 \\ 
                                   \HH~1-0Q(1)                                     &       0.40 &       0.60 &       0.74 &       1.10 &       1.27 &       1.91 \\ 
                                   \HH~1-0Q(2)                                     &       0.33 &       0.50 &       0.44 &       0.66 &       0.52 &       0.78 \\ 
                                   \HH~1-0Q(3)                                     &       0.37 &       0.55 &       0.52 &       0.78 &       0.58 &       0.87 \\ 
                                          \Pfd                                     &      38.70 &      58.06 &      35.76 &      53.64 &      59.23 &      88.85 \\ 
                                           \Ba                                     &      16.66 &      24.98 &      19.82 &      29.74 &      31.50 &      47.24 \\
  $[$ArIII]                                     &\multicolumn{2}{c}{$\le$12}  &\multicolumn{2}{c}{$\le$11}  & \multicolumn{2}{c}{$\le$12} \\
                                         $[$SIV]                                     &\multicolumn{2}{c}{$\le$6}   &\multicolumn{2}{c}{$\le$5}   & \multicolumn{2}{c}{$\le$5}  \\ 
                                        $[$NeII]                                     &      110   &     170    &        440 &      660   &       570  &        850 \\ 
%\hline
\multicolumn{7}{c}{$^a$spectral indexes $F\nu\propto\nu^{-\alpha}$}\\
                                                           $\alpha^{\rm 6~cm}_{\rm 2~cm}$ &      --0.49 &      --0.29 &      --0.87 &      --0.67 &      --0.54 &      --0.34 \\ 
                                                          $\alpha^{\rm 20~cm}_{\rm 6~cm}$ &      --0.29 &      --0.09 &      --0.66 &      --0.46 &      --0.03 &       0.17 \\ 
\noalign{\smallskip}\hline
\end{tabular}}
\smallskip
$^a$ Spectral indexes from \citet{Sandqvist95}. An uncertainty of $\pm$0.1 is added.
\end{table}