AMSR-E observes a given location on Earth from zero to eight times per day, depending on latitude, longitude, and phase of Aqua's orbit. This figure shows the minimum, maximum, and average number of times that AMSR-E observes a location at a given latitude. The average is around one-degree latitude bands.
For example, at the equator on a given day, AMSR-E does not observe certain longitudes that fall between orbits on that day. At other longitudes, where subsequent orbits overlap, AMSR-E observes that point twice per day. On the average, AMSR-E observes each longitude at the equator slightly more than once per day.