Absorption spectra (summed over all excited electronic states) obtained for the HCN(﹩{J}_{i}=1\to {J}_{f}=2﹩) rotational transition from two different initial states, ﹩{1}_{0}^{-}﹩ and ﹩{1}_{1}^{-}﹩ (this one at 712 cm−1 above ﹩{1}_{0}^{-}﹩ the ground level for Ji = 1).