Simulated optically thin NH₃ (1,1) spectrum under conditions of local thermodynamical equilibrium with a velocity dispersion of 0.5 km s⁻¹. The black line presents the simulated spectrum. The thick orange vertical lines above the zero level show the ranges of the sub-spectra used to fit the inner and outer satellite lines with single Gaussian functions. The thick blue vertical lines below the zero level indicate the integrated ranges used to calculate the integrated hyperfine intensity anomalies of the inner and outer satellite lines. The red lines show the single Gaussian fitting results. The cyan vertical lines below the zero level present the 18 individual hyperfine components listed in Table A.1. The lengths and separations of the lines denote their predicted intensities and velocity separations.