PPM is: The official measure of punctuality used up until the end of Control Period 5 - the public performance measure (PPM), considers trains to be punctual if they are five or 10 minutes after schedule, for short and long-distance trains are respectively, at their destination.

Samples of data sets will be made available via the Data Sandbox+ competition subject to the following terms. By downloading the datasets you agree to the following terms:

1. The sample datasets shall be downloaded and used solely for the purposes of preparing a bid for the RSSB Data Sandbox+ competition and for NO other purpose and/or project whatsoever;
2. If having downloaded the datasets you decide not to submit and/or withdraw a bid to the Data Sandbox+ competition or your bid is unsuccessful you shall as soon as is reasonably practicable delete all records and/or copies made of such datasets (or parts thereof); and agree not to save, copy, and/or store any such datasets (or part thereof) on your systems and/or use for any other purpose; and
3. Not to forward and/or disclose the datasets (or parts thereof) to any other party for any purpose. 

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