This surface seems to be associated and in phase with the three other patches of the same surface found in the central and southern part of Room 5 (7200, 7231, 7233). The (possibly concave) surface probably extended throughout at least the southern half of the room. Based on the physical relationships of these layers with both the drain (7201) and the dolium (7202) within the room, this surface was most likely in contemporaneous usage with those features.
Looking south