A method and apparatus estimate yield. A first signal is received that indicates an aggregate yield measured by an aggregate yield sensor during a measurement interval. A second signal is received that indicates a plurality of geo-referenced regions across which a harvester has traveled prior to the measurement interval. The method and apparatus allocate, to each of at least two geo-referenced regions, an aggregate yield portion allocation based upon different travel times for crops to the aggregate yield sensor and pre-harvest weighting data value differences amongst the at least two georeferenced regions. The aggregate yield portion allocations are output.
