From Wikipedia

Extraverted sensation is the sensing function that perceives sensations from the external world in an objective manner. For example, since an extraverted sensors type’s source of reward gravitates around perceiving and feeling external phenomena, he often has a good sense of aesthetic — whether this be the taste of food, or a new trend in clothing. Extraverted Sensors may be more attuned with spatial awareness and physical reality. Note that a bodily sensation is still considered extraverted sensing, as the sensation is being perceived in objective reality. Such as, drinking caffeine will objectively create a stimulating sensation in the person’s physiology. This is contrasted to the subjective sensor who may be concerned with a subjective response to the same drink (e.g. nostalgia that is tied to that specific cup of coffee, or whether or not they prefer the flavor).