In order to format a time to show hundredths of a second, you need to create a custom format as the standard time formats only show hours, minutes and seconds. The format to use would be hh:mm:ss.00 if you want the hours to reset after 24 hours (so a time of 25 hours would show 1 hour) or else [h]:mm:ss.00 if you want a time showing more than 24 hours (so 25 hours will show as 25 hours).
Updated with screenshots onĀ Excel format for hundredths of seconds
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