OH65 doublet toward Mrk 231. Three spectra are compared: GT-cen is the central spaxel of the GT observations, GT-avg is the average spectrum of the three brightest spaxels in the GT observations, and OT2-avg denotes the average spectrum of the three brightest spaxels in the OT2 observations. All three spectra show a prominent blueshifted line wing extending up to at least ~−1500 km s^-1.