Positions of the lines from circular Gaussian fits in the (uv)-plane to the integrated line emission. The positions are plotted relative to the continuum peak position (cross) and the error in position for the continuum peak position is roughly the extent of the cross while the extent of the ellipses shows the error in position for the lines. Ellipses with the same colors represent the same molecule, while the numbers refer to a certain molecule and transition which has the same number in Fig. 1, Tables 3, A.1 and A.2. Many of the detected lines are systematically offset from the continuum peak.