Cambridge train performance data

2005 Oct 18 to 2007 May 29

This data is obtained automatically from here. The data is actual delay from scheduled departure time, in minutes.

cumulative distributions

These plots allow a prediction of the probability (on the vertical axis) of departing d minutes or more late. The blue circle represents the target of 82.8% of trains departing within 5 minutes of schedule; that is, less than 17.2% delayed 6 or more minutes. If the red curve is under the blue circle, the target is met. The green vertical line denotes the average delay. Cancelled trains are ignored in these plots.