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
70%
16/23 runs under 3 min
RT coverage: 23 full · 0 partial · 0 no data
On-time · 90 days
81%
55/68 runs under 3 min
RT coverage: 68 full · 0 partial · 0 no data
Typical delay
−1min
Median at arrival, 90 days
30 days: 0 min
P90
+6min
9 in 10 runs arrive with less than this
30 days: +7 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
- Wed 28 Oct Max en route +16 min · last fix heading to Langley Mill +16 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 22 Oct Max en route +7 min · last fix heading to Langley Mill +7 min
Distribution · 90 days
68 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 22% · 15
- On time 59% · 40
- 3–10 min 15% · 10
- 10–30 min 4% · 3
- 30+ min 0% · 0
On-time by weekday
- 58% M n=12
- 91% T n=11
- 83% W n=12
- 73% T n=11
- 92% F n=12
- 90% S n=10
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 7 Nov | Langley Mill 08:14 | +1 min | +5 min |
| Fri 6 Nov | Langley Mill 08:13 | −2 min | — |
| Thu 5 Nov | Langley Mill 08:14 | 0 min | +1 min |
| Wed 4 Nov | Langley Mill 08:13 | −2 min | +1 min |
| Tue 3 Nov | Langley Mill 08:13 | −1 min | +1 min |
| Mon 2 Nov | Langley Mill 08:14 | 0 min | +5 min |
| Sat 31 Oct | Langley Mill 08:23 | 0 min | +1 min |
| Fri 30 Oct | Langley Mill 08:22 | −1 min | +2 min |
| Thu 29 Oct | Langley Mill 08:25 | +3 min | +6 min |
| Wed 28 Oct | Langley Mill 08:38 | +16 min | +16 min |
| Tue 27 Oct | Langley Mill 08:23 | 0 min | +1 min |
| Mon 26 Oct | — 07:50 | +4 min | +4 min |
| Sat 24 Oct | Langley Mill 08:24 | +1 min | +2 min |
| Fri 23 Oct | Langley Mill 08:28 | +6 min | +6 min |
| Thu 22 Oct | Langley Mill 08:30 | +7 min | +7 min |
| Wed 21 Oct | Langley Mill 08:22 | −1 min | +1 min |
| Tue 20 Oct | Langley Mill 08:30 | +7 min | +9 min |
| Mon 19 Oct | Langley Mill 08:27 | +5 min | +5 min |
| Sat 17 Oct | Langley Mill 08:23 | 0 min | +5 min |
| Fri 16 Oct | Langley Mill 08:22 | −1 min | +1 min |
| 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 |
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.