Detailed view of the observed spectrum of Orion KL at 7 mm (in blue), superimposed on the identification of the most intense lines and the best fit model for the molecular species (in red). Each panel displays a width of approximately 250 MHz. In order to improve the visibility of low intensity lines, some frequency ranges are plotted with a zoom in intensity (grey boxes); a second level of zoom, when necessary, is also depicted (yellow boxes). To compute the rest frequencies, a velocity of vLSR = +9 km s-1 is assumed. We note that the model results do not include the SiO masers nor the RRLs.
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