High velocity resolution spectra of NH₃ maser transitions showing the new  ~45 km s^-1 component. The upper and central profiles are extracted from Figs. 2 and 3, respectively. The second panel from the top shows a profile with eight contiguous channels smoothed (channel spacing: 0.96 km s^-1, otherwise, see Table 1). The original spectrum, albeit noisy, indicates a line width consistent with that shown in the spectrum of the (9, 9) line measured on the same day. The Gaussian fit parameters of the (12, 12) spectrum from November 28, 1995, given in Table 1, were deduced from the original unsmoothed spectrum.