Upper panel: full baseline-subtracted spectral survey (black line) at 1.1 MHz resolution. The set of bright lines towering above the rest is CO, the feature at 1901 GHz is CII. Second panel: full baseline-subtracted spectral survey (black line) on a blown-up y-scale to emphasize weak lines and a second-order polynomial fit (red) to the subtracted continuum in bands 1a through 5a (red). Third panel: T_mb scale integrated intensity of each detected transition. Lower panel: the local rms noise around each detected transition.