H₂O ν₂ = 1 − 0 line profiles in IRAS 07251−0248 observed with JWST MIRI/MRS. Filled histograms are the observed profiles and blue lines are model results. Abscissa represents velocity (in km s⁻¹) and ordinate is continuum-normalized. All detected lines have a peak absorption that is blueshifted by 100 − 200 km s⁻¹. The selected transitions are R or Q branch lines that are not extremely blended and cover a representative range of level energies. Note that some displayed lines are not detected (right column). The energy level diagram corresponds to the ground state, with levels involved in the displayed profiles shown in red.