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Downlink data products in Mars rover missions need to be associated with their uplink commanded target locations and the uplink commands that produced them. A system for automatically associating downlink data products with uplink commands and targets has been developed and used in a terrestrial rover field test. HTML reports viewable in a browser are automatically generated to relate downlink data products with the uplink sequence elements that produced them. The approach assumes that there is only one sequence thread being executed on the rover. This assumption is not true for the 2003 Mars Exploration Rover mission, so the approach cannot be used directly in the MER mission.