GWR 851A84
View line GWR
Alerts for train 851A84
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.
It does not run today
Last recorded run: Friday 9 October +6 min
The mini-map returns when the train runs
On-time · 30 days
25%
5/20 runs under 3 min
RT coverage: 20 full · 0 partial · 0 no data
On-time · 90 days
17%
12/72 runs under 3 min
RT coverage: 72 full · 0 partial · 0 no data
Typical delay
+10min
Median at arrival, 90 days
30 days: +7 min
P90
+39min
9 in 10 runs arrive with less than this
30 days: +17 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 5 Sept Max en route +117 min · last fix heading to 73251 +117 min
- Fri 24 Jul Max en route +69 min · last fix heading to 74233 +62 min
- Fri 31 Jul Max en route +50 min · last fix heading to 73251 +48 min
- Tue 21 Jul Max en route +47 min · last fix heading to 73251 +47 min
- Fri 17 Jul Max en route +47 min · last fix heading to 74233 +47 min
Distribution · 90 days
72 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 17% · 12
- 3–10 min 29% · 21
- 10–30 min 35% · 25
- 30+ min 19% · 14
On-time by weekday
- 17% M n=12
- 33% T n=12
- 8% W n=13
- 23% T n=13
- 0% F n=13
- 22% S n=9
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 9 Oct | Slough 15:43 | +6 min | +8 min |
| Thu 8 Oct | Slough 15:40 | +3 min | +3 min |
| Wed 7 Oct | Slough 15:38 | +1 min | +6 min |
| Tue 6 Oct | Maidenhead 15:40 | +2 min | +3 min |
| Mon 5 Oct | Slough 15:43 | +7 min | +9 min |
| Fri 2 Oct | 73251 15:45 | +9 min | +14 min |
| Thu 1 Oct | 73251 15:42 | +5 min | +5 min |
| Wed 30 Sept | 73251 15:51 | +14 min | +14 min |
| Tue 29 Sept | 73251 15:39 | +2 min | +2 min |
| Mon 28 Sept | 83398 13:26 | +1 min | +1 min |
| Fri 25 Sept | 73251 16:15 | +37 min | +37 min |
| Thu 24 Sept | 73251 15:47 | +10 min | +10 min |
| Wed 23 Sept | 73251 15:50 | +13 min | +17 min |
| Tue 22 Sept | 73251 15:39 | +2 min | +9 min |
| Mon 21 Sept | 73251 15:40 | +3 min | +6 min |
| Fri 18 Sept | 73251 15:44 | +7 min | +15 min |
| Thu 17 Sept | 73251 15:47 | +10 min | +16 min |
| Wed 16 Sept | 73251 16:02 | +26 min | +26 min |
| Tue 15 Sept | 73251 15:52 | +16 min | +16 min |
| Mon 14 Sept | 73251 15:52 | +15 min | +21 min |
| Sat 12 Sept | 73251 16:29 | +7 min | +7 min |
| Fri 11 Sept | 73251 15:47 | +9 min | +14 min |
| Thu 10 Sept | 73251 15:38 | +2 min | +3 min |
| Wed 9 Sept | 73251 16:14 | +37 min | +45 min |
| Tue 8 Sept | 73251 16:12 | +35 min | +44 min |
| Mon 7 Sept | 73251 15:39 | +2 min | +4 min |
| Sat 5 Sept | 73251 20:12 | +117 min | +117 min |
| Fri 4 Sept | 73251 16:19 | +42 min | +46 min |
| Thu 3 Sept | 73251 15:37 | 0 min | +9 min |
| Wed 2 Sept | 73251 15:41 | +4 min | +5 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.