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<p>The Department holds performance data on a rail period (13 four-week periods per
year) basis, rather than according to calendar months.</p><p>For punctuality we hold
the data as the Public Performance Measure (PPM), the percentage of trains arriving
at their destination within five minutes of schedule. For reliability we hold the
data as Cancellations and Significant Lateness, the percentage of services that are
cancelled or delayed by more than thirty minutes.</p><p>The periodic results for the
Thameslink route between Bedford and London, covering all days of the week in both
directions, are contained in the table below. This does include the vast majority
of services that passengers from Bedford would use, except for a small number of services
which stop at all stations south of St Albans, which are counted in a separate ‘metro’
category. As this is data for the entire service group, it will include some trains
that did not run the full length of the route.</p><p> </p><table><tbody><tr><td><p><strong>Period</strong></p></td><td><p><strong>PPM</strong></p></td><td><p><strong>CaSL</strong></p></td></tr><tr><td><p>9
December 2018 – 5 January 2019</p></td><td><p>85.6%</p></td><td><p>4.4%</p></td></tr><tr><td><p>6
January 2019 – 2 February 2019</p></td><td><p>83.0%</p></td><td><p>4.5%</p></td></tr><tr><td><p>3
February 2019 – 2 March 2019</p></td><td><p>85.9%</p></td><td><p>4.0%</p></td></tr><tr><td><p>3
March 2019 – 31 March 2019</p></td><td><p>83.7%</p></td><td><p>5.8%</p></td></tr><tr><td><p>1
April 2019 – 27 April 2019</p></td><td><p>88.4%</p></td><td><p>4.2%</p></td></tr><tr><td><p>28
April 2019 – 25 May 2019</p></td><td><p>86.4%</p></td><td><p>3.0%</p></td></tr></tbody></table><p>
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