Table 3: Gas temperature and density, and column densities of SO, SO2, H2S, SiO and  $\rm H_{2}CO$ in six "key'' positions. The column densities are beam-averaged in the shocked regions (on 27'' for SiO, 26'' for H2CO, 24'' for SO, 18'' for SO2 and 25'' for H2S), whereas they are corrected from the beam dilution in IRAS 16293. Errors on the estimates are around 15% if considering only the statistical uncertainties. However, a factor two of uncertainty has to be considered, when the uncertainty on the density and temperature of the emitting gas is considered.
  Density T $N_{\rm SO}$ $N_{\rm SO_2}$ $N_{\rm H_2S}$ $N_{\rm SiO}$ $N_{\rm H_{2}CO}$
  ( $10^{5}~\rm cm^{-3}$) (K) ( $10^{13}~\rm cm^{-2}$) ( $10^{13}~\rm cm^{-2}$) ( $10^{13}~\rm cm^{-2}$) ( $10^{13}~\rm cm^{-2}$) ( $10^{13}~\rm cm^{-2}$)
IRAS 16293 250 100 13 000 4100 4000 110 750
E1 1.8 150 15 7.3 $\leq$96 0.42 7.0
E2(LVC) 1.0 150 3.2 $\leq$0.44 $\leq$260 0.21 $\leq$0.86
E2(HVC) 0.4 100 7.8 $\leq$1.1 $\leq$1200 1.0 $\leq$1.8
W1 2.6 150 24 2.4 $\leq$72 0.15 3.4
W2 1.8 80 8.7 2.9 $\leq$76 0.15 3.6
Cloud 0.3 26 30-80 2 1.5 0.02 2


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