CO spectra (CO(3−2), ¹³CO(3−2), CO(4−3), and CO(6−5)) toward MIR-63, the southern and northern peak in the red outflow, and the blueshifted emission peak near HH 1. MIR-63 is at an offset −18″.3, −104″.7, the southern peak at 41″.3, −133″.0, the northern peak at +30″, −97″, and HH 1 at −97″, −110″. All offsets are relative to HD 37903. The spectra toward the northern peak, where the CO emission is very strong, are scaled by a factor of 0.6. The gray vertical line marks the systemic velocity (~10.0 km s⁻¹). The spectra for the different CO transitions are offset by 20 K.