Integrated intensity maps of six species across G35.20, where the contours are the 870 μm continuum with the same levels as Fig. 1. Panel a) shows the CH₃OCHO ν = 0 emission at 336.086 GHz integrated from 18.5 to 38 km s^-1. Panel b) shows the CH₃OCHO ν = 1 emission at 348.084 GHz integrated from 26 to 38.5 km s^-1. Panel c) shows the H₂CS emission at 338.083 GHz integrated from 24.5 to 38.5 km s^-1. Panel d) shows ethylene glycol ((CH₂OH)₂) emission at 335.030 GHz integrated from 25–36.5 km s^-1. Panel e) shows CH₃CHO ν = 0 emission at 335.318 GHz integrated from 22.5 to 37 km s^-1. Panel f) shows CH₃CHO ν = 2 emission at 349.752 GHz integrated from 24 to 29 km s^-1. It can clearly be seen between panels a) and b) and between e) and f) that vibrationally excited states have a much smaller emitting region. It is also clear in panel d) that (CH₂OH)₂ is only seen in core A.