Left panel: CO (9–8) line emission obtained with SPIRE. The coloured contours show where the signal-to-noise ratio is higher than 5, the black line indicate the 3σ level and the white line the 1σ level. The FWHM of the SPIRE beam is indicated in the lower right corner of this figure. Right panel: red (CO), blue (H₂O) and green ([O i]) markers show the location of the emission maximum with error bars from the Gaussian fit. The open square, circle, triangle and diamond show the peak positions of the fine-structure emission lines [Ne ii] 12.8 μm, [Fe ii] 26 μm, [S i] 25 μm, and [Si ii] 35 μm lines, respectively (Neufeld et al. 2006, Fig. 3). The arrows indicate the direction of increasing J_up for CO and the direction to IRAS 12 500–7658. The quantum numbers (only J_up for CO) are also shown in the figure. Angular offsets are given relative to the position of HH 54 B.