All Tables

Table 1: Parameters of observed rotational transitions.
Table 2: Positions and velocities of the observed sources. IRDC positions are taken from Carey et al. (1998).
Table 3: ${\rm NH_{2}D}$ and ${\rm NH_3}$ column densities, rotational temperature and fractionation.
Table 4: ${\rm C^{18}O}$ column density and abundance from (J=1-0) and (J=2-1) transitions.
Table 5: ${\rm C^{17}O}$ (J=2-1) line parameters.
Table 6: ${\rm H^{13}CN}$ and ${\rm HC^{15}N}$ line parameters and column density.
Table A.1: Molecular parameters used to estimate $N_{\rm tot}$ .
Table A.2: ${\rm NH_3}$ line parameters with uncertainties (in brackets) from the hyperfine/Gaussian fits.
Table A.3: ${\rm NH_{2}D}$ line parameters with uncertainties (in brackets) from the hyperfine/Gaussian fits.
Table A.4: ${\rm C^{18}O}$ (J=1-0) and (J=2-1) line parameters.