Result of the hyperfine structure deconvolution code applied on the SH⁺ (1,2 ← 0,1) absorption spectrum observed towards SgrB2(N) and W49N. The top panel displays the original data (black) and the resulting decomposition in three hyperfine components, aligned to the same velocity scale. The hyperfine components are shifted by their velocity shift Δυ_h (see Table 2) in the bottom panels, to show how they can be combined (green line) to reproduce the original data (black line). For more clarity, the hyperfine components were vertically shifted from the original data.