Column densities in all components of G1.3 (left panel) and G1.6 (right panel) obtained from non-LTE modelling with RADEX. The horizontal line shows the average column density in the cloud complex, the shaded area indicates a deviation from the average by a factor 2. Vertical dashed lines indicate the high-velocity components. Arrows indicate lower limits. If no marker is shown, either the molecule is not detected in this component or the molecule has not been modelled for various reasons (see Tables C.1, C.2 and text).