Water use told the tail of the Olympic Ice Hockey game that the United States forced into overtime before losing to Canada. The green line is from the day before. The peaks are timestamped by game events. You can see an increase in water use as people get set to watch the game. The pikes at the end of each period follow a valley that gets steeper progressively. It makes sense, no one watching the game at the end of the third period would have gone to the bathroom if there was any way they could hold it. Overtime is sudden death; again, no one using the facilities if they have a choice. After the upswing from the people waiting until after the medal ceremony water use returned to normal.
Picture embedded below.