A method for managing data regarding one or more flows of physical entities in a geographic area during at least one predetermined time period. For each physical entity, the data includes a plurality of positioning data representing detected positions of the element in the geographic area and corresponding time data identifying instants at which each position is detected. The method subdivides the geographic area into at least two zones, subdivides the at least one time period into one or more time slots, and identifies a number of physical entities that flowed from a first zone of the at least two zones to a second zone of the at least two zones during each time slot.