SM chips for chip time or gun time?

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Posted by jon jifu on November 20, 19100 at 20:20:58:

Does anyone know if the Seattle Marathon chip timing is used to give true
chip time results of elapsed time from the time of crossing the starting
pad to the finish pad, or the chip is only used to facilitate computer
compilation of elapsed time from the starting gun (no matter when a runner
crosses the starting pad)to the time the chip crosses the finish pad??

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