Lines toward CRBR 85 and the Flying Saucer. Top panel: ¹³CO J = 2−1 spectrum. Bottom panel, from top to bottom: ¹³CO J = 2−1, C¹⁷O J = 2−1, CN N = 2−1, the average of both o-H₂CO transitions, and SO 5₄−4₃, shifted in intensity by multiples of 0.15 K to avoid overlap. The intensity scale is the antenna temperature ( in K): conversion to flux density can be obtained using a factor of 9 Jy/K. The spectral resolution is 0.26 km s^-1. For the Flying Saucer, the bottom panel spectra has been smoothed by a factor 2 for better clarity.