Northern 551Y04
View line Northern
Alerts for train 551Y04
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Northern.
The mini-map returns when the train runs
On-time · 30 days
80%
20/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
88%
56/64 runs under 3 min
RT coverage: 64 full · 0 partial · 0 no data
Typical delay
−1min
Median at arrival, 90 days
30 days: −1 min
P90
+3min
9 in 10 runs arrive with less than this
30 days: +5 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
- Sat 1 Aug Max en route +29 min · last fix heading to 25635 +25 min
- Wed 16 Sept Max en route +13 min · last fix heading to 25635 +11 min
- Sat 19 Sept Max en route +10 min · last fix heading to 17196 +10 min
- Mon 31 Aug Max en route +18 min · last fix heading to 17196 +9 min
- Thu 17 Sept Max en route +7 min · last fix heading to 17196 +6 min
Distribution · 90 days
64 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 20% · 13
- On time 67% · 43
- 3–10 min 8% · 5
- 10–30 min 5% · 3
- 30+ min 0% · 0
On-time by weekday
- 77% M n=13
- 100% T n=10
- 91% W n=11
- 90% T n=10
- 91% F n=11
- 78% S n=9
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Wed 14 Oct | Langley Mill 08:23 | 0 min | +2 min |
| Mon 12 Oct | Langley Mill 08:21 | −1 min | +2 min |
| Sat 10 Oct | Langley Mill 08:21 | −1 min | +2 min |
| Fri 9 Oct | Langley Mill 08:22 | −1 min | +1 min |
| Thu 8 Oct | Langley Mill 08:22 | −1 min | +3 min |
| Wed 7 Oct | Langley Mill 08:22 | −1 min | — |
| Tue 6 Oct | Langley Mill 08:23 | 0 min | +2 min |
| Mon 5 Oct | 17196 08:26 | +4 min | +7 min |
| Sat 3 Oct | 17196 08:22 | −1 min | +2 min |
| Fri 2 Oct | 17196 08:22 | −1 min | +3 min |
| Thu 1 Oct | 17196 08:21 | −2 min | +1 min |
| Wed 30 Sept | 17196 08:20 | −2 min | +1 min |
| Tue 29 Sept | 17196 08:22 | 0 min | +1 min |
| Mon 28 Sept | 17196 08:26 | +3 min | +3 min |
| Sat 26 Sept | 17196 08:22 | −1 min | +3 min |
| Fri 25 Sept | 17196 08:21 | −2 min | +1 min |
| Thu 24 Sept | 17196 08:25 | +2 min | +4 min |
| Wed 23 Sept | 17196 08:22 | −1 min | +3 min |
| Tue 22 Sept | 17196 08:21 | −1 min | +1 min |
| Mon 21 Sept | 17196 08:22 | −1 min | +1 min |
| Sat 19 Sept | 17196 08:33 | +10 min | +10 min |
| Fri 18 Sept | 17196 08:21 | −1 min | +1 min |
| Thu 17 Sept | 17196 08:29 | +6 min | +7 min |
| Wed 16 Sept | 25635 07:32 | +11 min | +13 min |
| Tue 15 Sept | 17196 08:24 | +2 min | +4 min |
| Mon 14 Sept | 17196 08:21 | −1 min | +1 min |
| Sat 12 Sept | 17196 08:21 | −2 min | +1 min |
| Fri 11 Sept | 17196 08:21 | −2 min | +1 min |
| Thu 10 Sept | 17196 08:21 | −1 min | +1 min |
| Wed 9 Sept | 17196 08:22 | −1 min | +4 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.