Top: multiple HFS line profile fitting of NH₃(1, 1) on the (−400, 520) offset. The spectrum shows one of the brightest secondary line components and gives the lowest T_kin value; see position #4 in Table 2. Box 1: single HFS line profile fit; box 2: residual from the single HFS fit; box 3: simultaneous HFS profile fitting of both components; box 4: the residual from the simultaneous HFS fit; box 5: the residual from the single HFS fit with the HFS fit of the secondary component shown in box 4. Bottom: single NH₃(1, 1) HFS line profile fit on position #8 and the residual after subtracting the fit. This position has the highest HFS linewidth from the spectra in Table 2. We note the different scales for the (1, 1) and (2, 2) lines.