Chiltern Railways 631T15
View line Chiltern Railways
Alerts for train 631T15
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Chiltern Railways.
The mini-map returns when the train runs
On-time · 30 days
87%
26/30 runs under 3 min
RT coverage: 30 full · 0 partial · 0 no data
On-time · 90 days
86%
75/87 runs under 3 min
RT coverage: 87 full · 0 partial · 0 no data
Typical delay
0min
Median at arrival, 90 days
30 days: 0 min
P90
+3min
9 in 10 runs arrive with less than this
30 days: +4 min
Last 30 days
Delay at the end of each run, in minutes. One bar per run.
- On time (<3 min)
- 3–10 min
- 10–30 min
- 30+ min
- Partial coverage
- No data
Worst days
- Tue 8 Sept Max en route +29 min · last fix heading to 74425 +29 min
- Mon 21 Sept Max en route +16 min · last fix heading to 74425 +13 min
- Tue 1 Sept Max en route +17 min · last fix heading to 74425 +13 min
- Mon 26 Oct Max en route +10 min · last fix heading to Oxford Parkway +8 min
- Wed 21 Oct Max en route +9 min · last fix heading to Oxford Parkway +7 min
Distribution · 90 days
87 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 86% · 75
- 3–10 min 10% · 9
- 10–30 min 3% · 3
- 30+ min 0% · 0
On-time by weekday
- 77% M n=13
- 69% T n=13
- 77% W n=13
- 92% T n=13
- 92% F n=13
- 100% S n=12
- 100% S n=10
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 31 Oct | Oxford Parkway 10:12 | −1 min | — |
| Fri 30 Oct | Oxford Parkway 10:04 | −1 min | — |
| Thu 29 Oct | Oxford Parkway 10:04 | −1 min | — |
| Wed 28 Oct | Oxford Parkway 10:05 | −1 min | +2 min |
| Tue 27 Oct | Oxford Parkway 10:04 | −1 min | +1 min |
| Mon 26 Oct | Oxford Parkway 10:13 | +8 min | +10 min |
| Sun 25 Oct | Oxford Parkway 10:14 | 0 min | — |
| Sat 24 Oct | Oxford Parkway 10:13 | 0 min | +1 min |
| Fri 23 Oct | Oxford Parkway 10:04 | −1 min | — |
| Thu 22 Oct | Oxford Parkway 10:10 | +5 min | +8 min |
| Wed 21 Oct | Oxford Parkway 10:12 | +7 min | +9 min |
| Tue 20 Oct | Oxford Parkway 10:04 | 0 min | +1 min |
| Mon 19 Oct | Oxford Parkway 10:06 | +1 min | +1 min |
| Sun 18 Oct | Oxford Parkway 10:14 | 0 min | +2 min |
| Sat 17 Oct | Oxford Parkway 10:13 | 0 min | — |
| Fri 16 Oct | Oxford Parkway 10:04 | −1 min | +1 min |
| Thu 15 Oct | Oxford Parkway 10:04 | −1 min | +1 min |
| Wed 14 Oct | Oxford Parkway 10:06 | +1 min | +3 min |
| Tue 13 Oct | Oxford Parkway 10:05 | 0 min | +1 min |
| Mon 12 Oct | Oxford Parkway 10:04 | 0 min | — |
| Sun 11 Oct | Oxford Parkway 10:14 | 0 min | +1 min |
| Sat 10 Oct | Oxford Parkway 10:13 | 0 min | — |
| Fri 9 Oct | Oxford Parkway 10:04 | 0 min | — |
| Thu 8 Oct | Oxford Parkway 10:04 | −1 min | +1 min |
| Wed 7 Oct | Oxford Parkway 10:05 | −1 min | — |
| Tue 6 Oct | Oxford Parkway 10:09 | +4 min | +7 min |
| Mon 5 Oct | 74425 10:04 | 0 min | — |
| Sun 4 Oct | 74425 10:14 | 0 min | +1 min |
| Sat 3 Oct | 74425 10:12 | −1 min | — |
| Fri 2 Oct | 74425 10:04 | −1 min | — |
Each run is closed into train_runs (country, train number, service day) from the live positions. Final delay = last delay seen. Partial coverage: the feed stopped before the final stop (last value used, hatched in the chart). No data: a run without any valid delay; counts as neither on time nor late. Data collected since 11 July 2026.