CH-- \"I assume you believe the track speed remained constant\".
WRONG. They believe the track speed MUST reman constant. It\'s a rule. In other words, they come up with an average track speed for the day, and apply it to all races.
In this case, the card started at 10:45 A.M. and ended at 7:00. Temperature changes, watering (or not), wind (or not), sun (or not), who cares. It\'s a rule.
Like I said, fundamentalists. Calling Harold Camping...