Notes. ⁽¹⁾Rest frequency of the lines are taken from the “Splatalogue database for astronomical spectroscopy” available at https://www.cv.nrao.edu/php/splat, see references therein. ⁽²⁾Setup IDs are listed in Table 1. ^( ⋆ )The Λ-doubling transitions of the hydroxyl molecule listed here are two triplets produced by the hyperfine structure splitting of the upper and lower level that is not spectrally resolved in the observations. We report the average rest frequency of the triplets. The six transitions are OH ²Π_1/2,,1 − 1; OH ²Π_1/2,,2 − 1; OH ²Π_1/2,,1 − 0 and OH ²Π_1/2,,1 − 1; OH ²Π_1/2,,2 − 1; and OH ²Π_1/2,,1 − 0.