Zoom-ins of the CX Tau spectrum (black) around various possible detections of H lines. We show the best-fit ro-vibrational H₂O model (the best fit to the 5.5-8.5 µm region) in all panels containing lines below 10 µm and the best-fit rotational model (the best fit to the 13.5-17.5 µm region) in all panels containing lines at longer wavelengths. These H₂O slab models are shown in blue, and solid vertical lines indicate the central wavelengths of the H lines, where the n_low = 5 (Paschen) series is shown in green, the n_low = 6 (Humphreys) series is shown in blue, and the n_low = 7 series is shown in red.