GWR 851A82
View line GWR
Alerts for train 851A82
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
32%
7/22 runs under 3 min
RT coverage: 22 full · 0 partial · 0 no data
On-time · 90 days
26%
21/80 runs under 3 min
RT coverage: 80 full · 0 partial · 0 no data
Typical delay
+6min
Median at arrival, 90 days
30 days: +5 min
P90
+39min
9 in 10 runs arrive with less than this
30 days: +42 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 21 Oct Max en route +61 min · last fix heading to Theale +58 min
- Sun 16 Aug Max en route +63 min · last fix heading to 73251 +57 min
- Fri 11 Sept Max en route +56 min · last fix heading to 73251 +55 min
- Sun 25 Oct Max en route +51 min · last fix heading to Maidenhead +51 min
- Tue 18 Aug Max en route +63 min · last fix heading to 74233 +49 min
Distribution · 90 days
80 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 25% · 20
- 3–10 min 34% · 27
- 10–30 min 26% · 21
- 30+ min 14% · 11
On-time by weekday
- 9% M n=11
- 42% T n=12
- 55% W n=11
- 25% T n=12
- 18% F n=11
- 31% S n=13
- 0% S n=10
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 7 Nov | Slough 14:29 | +1 min | +4 min |
| Fri 6 Nov | Maidenhead 14:28 | −1 min | +2 min |
| Thu 5 Nov | Maidenhead 14:34 | +6 min | +9 min |
| Wed 4 Nov | Maidenhead 14:29 | 0 min | +5 min |
| Tue 3 Nov | Slough 14:53 | +24 min | +31 min |
| Mon 2 Nov | Maidenhead 14:33 | +4 min | +5 min |
| Sun 1 Nov | Slough 15:20 | +44 min | +44 min |
| Sat 31 Oct | Maidenhead 14:45 | +8 min | +12 min |
| Fri 30 Oct | Slough 14:44 | +7 min | +10 min |
| Thu 29 Oct | Slough 14:40 | +3 min | +6 min |
| Wed 28 Oct | Maidenhead 14:42 | +5 min | +9 min |
| Tue 27 Oct | Slough 14:41 | +4 min | +7 min |
| Mon 26 Oct | Slough 14:43 | +6 min | +10 min |
| Sun 25 Oct | Maidenhead 15:28 | +51 min | +51 min |
| Sat 24 Oct | Slough 14:39 | +2 min | +2 min |
| Thu 22 Oct | Slough 14:42 | +5 min | +6 min |
| Wed 21 Oct | Theale 15:09 | +58 min | +61 min |
| Tue 20 Oct | Maidenhead 14:34 | −3 min | +2 min |
| Mon 19 Oct | Maidenhead 15:04 | +27 min | +28 min |
| Sun 18 Oct | Maidenhead 14:40 | +3 min | +6 min |
| Sat 17 Oct | Maidenhead 14:38 | +1 min | +3 min |
| Sat 10 Oct | Slough 15:06 | +1 min | +6 min |
| Fri 9 Oct | Maidenhead 14:41 | +4 min | +9 min |
| Thu 8 Oct | Slough 14:37 | 0 min | +11 min |
| Wed 7 Oct | Maidenhead 14:38 | +1 min | +1 min |
| Tue 6 Oct | Slough 14:55 | +18 min | +21 min |
| Mon 5 Oct | Slough 14:41 | +4 min | +4 min |
| Sun 4 Oct | 73251 15:01 | +29 min | +31 min |
| Sat 3 Oct | 73251 14:41 | +5 min | +9 min |
| Fri 2 Oct | 73251 14:37 | −1 min | +6 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.