Water map at 66.4 μm observed by the PACS spectrometer on December 15, 2010. Jupiter is represented by the black ellipse, and its rotation axis is also displayed. The beam is represented by a gray filled circle. The continuum (in Jy), the line peak intensity (=l/c-1), and the line area (in microns × % of the continuum) are displayed. While the line peak intensity and line area values can be relied on, the absolute flux values cannot (see text for more details). This map confirms the lack of emission at mid-to-high latitudes in the northern hemisphere (best seen at the limb).