Representative best-fit LTE spectra for three Class II discs. Sz 114 (top row), FZ Tau (middle row), and FT Tau (bottom row), showing varying levels of water contribution to H i (7–6), H i (6–5), and H i (12–7) lines. In each panel, the black curve represents the continuum-subtracted JWST/MIRI spectrum, while the coloured curve shows the best-fit LTE H₂O emission model. Inset boxes indicate the fitted physical parameters: temperature (T), column density (log(N)), and emitting radius (R) for the water model. Other H i lines are annotated in each of the sub-panels.