Continuum images overplotted (Fig. 13) with H₂O (blue) and CO (white) intensity contours (from Figs. 14 and 15). Intensity contour levels represent 2% and 5% of the maximum intensity of each image and allow comparing the extension and shape of the environment between spectral bands for epochs A (left panels) and B (right panels). The upper panels represent the Cont (1), H₂O(1) and CO(1) bands, whereas the lower panels represent the Cont (2), H₂O(2) and CO(2) bands.