Continuum selection figures for band 3 (top) and band 6 (bottom). For each field, there are up to three rows: the first is 7m, the second is the short-baseline configuration of the 12m array, and the third – when present – is the long-baseline configuration of the 12m array. Red shows data included in the continuum, yellow shows data excluded from the continuum, and black shows where no data were taken (for several fields, only one 12m configuration was used). The blue vertical lines show selected bright emission lines doppler shifted to the target velocity in these fields. Selected lines are N₂H⁺ 1-0, SiO 5-4, H₂CO 3_0, 3 − 2_0, 2, ¹²CO 2-1, H30α, H41α, and C¹⁸O 2-1. The X-axis shows frequency in the kinematic local standard of rest (LSRK) frame. W43-MM1 B6 was observed with a slightly different frequency setup; its spectral coverage continues beyond the right edge of the plot.