Retrieved meridional trend for H₂O for the low latitudes (green), and the three tiles of the SPR: 330^∘W in orange, 70^∘W in red, and 130^∘W in blue. This is compared with the prediction made by Benmahi et al. (2020) for 2022 (disc-averaged), and the measurements of Cavalié et al. (2013) using Herschel/HIFI for the southern polar region. The lowest parallel reached by the southern auroral oval is indicated by a vertical dashed line following Hue et al. (2024).