GWR 811A19
View line GWR
Alerts for train 811A19
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line GWR.
The mini-map returns when the train runs
On-time · 30 days
52%
13/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
40%
30/75 runs under 3 min
RT coverage: 75 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +2 min
P90
+11min
9 in 10 runs arrive with less than this
30 days: +11 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 6 Oct Max en route +119 min · last fix heading to Slough +119 min
- Mon 14 Sept Max en route +51 min · last fix heading to 73251 +50 min
- Wed 23 Sept Max en route +34 min · last fix heading to 74331 +34 min
- Mon 7 Sept Max en route +26 min · last fix heading to 73251 +23 min
- Thu 13 Aug Max en route +17 min · last fix heading to 73251 +17 min
Distribution · 90 days
75 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 39% · 29
- 3–10 min 45% · 34
- 10–30 min 11% · 8
- 30+ min 4% · 3
On-time by weekday
- 23% M n=13
- 46% T n=13
- 38% W n=13
- 46% T n=13
- 42% F n=12
- 45% S n=11
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 5 Nov | Maidenhead 13:37 | +3 min | +5 min |
| Wed 4 Nov | Maidenhead 13:37 | +3 min | +4 min |
| Tue 3 Nov | Maidenhead 13:49 | +16 min | +16 min |
| Mon 2 Nov | Slough 13:34 | +3 min | +7 min |
| Sat 31 Oct | Slough 13:43 | −1 min | +3 min |
| Fri 30 Oct | Slough 13:50 | +8 min | +11 min |
| Thu 29 Oct | Slough 13:45 | +3 min | +4 min |
| Wed 28 Oct | Maidenhead 13:43 | +1 min | +1 min |
| Tue 27 Oct | Slough 13:54 | +11 min | +11 min |
| Mon 26 Oct | Maidenhead 13:44 | +2 min | +2 min |
| Sat 24 Oct | Slough 13:52 | +9 min | +11 min |
| Fri 23 Oct | Maidenhead 13:42 | −1 min | +4 min |
| Thu 22 Oct | Slough 13:53 | +11 min | +12 min |
| Wed 21 Oct | Maidenhead 13:41 | −1 min | +1 min |
| Tue 20 Oct | Slough 13:53 | +12 min | +13 min |
| Mon 19 Oct | Maidenhead 13:42 | 0 min | +1 min |
| Sat 17 Oct | Slough 13:42 | −3 min | +1 min |
| Fri 16 Oct | Slough 13:45 | +3 min | +5 min |
| Thu 15 Oct | Slough 13:45 | +3 min | +6 min |
| Wed 14 Oct | Maidenhead 13:44 | +2 min | +3 min |
| Tue 13 Oct | Slough 13:43 | +1 min | +3 min |
| Mon 12 Oct | Maidenhead 13:43 | +1 min | +2 min |
| Sat 10 Oct | Slough 13:43 | −1 min | — |
| Fri 9 Oct | Maidenhead 13:43 | +1 min | +2 min |
| Thu 8 Oct | Maidenhead 13:43 | +1 min | +5 min |
| Wed 7 Oct | Maidenhead 13:46 | +4 min | +5 min |
| Tue 6 Oct | Slough 15:47 | +119 min | +119 min |
| Mon 5 Oct | Slough 13:45 | +3 min | +5 min |
| Sat 3 Oct | 73251 13:46 | +3 min | +4 min |
| Fri 2 Oct | 73251 13:44 | +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.