C4b 20487
View line C4b
Alerts for train 20487
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line C4b.
The mini-map returns when the train runs
On-time · 30 days
57%
12/21 runs under 3 min
RT coverage: 21 full · 0 partial · 0 no data
On-time · 90 days
41%
26/63 runs under 3 min
RT coverage: 63 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +1 min
P90
+27min
9 in 10 runs arrive with less than this
30 days: +16 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 18 Aug Max en route +98 min · last fix heading to Parla +98 min
- Thu 6 Aug Max en route +64 min · last fix heading to Parla +64 min
- Wed 9 Sept Max en route +48 min · last fix heading to Universidad-Cantoblanco +44 min
- Thu 17 Sept Max en route +32 min · last fix heading to Tres Cantos +32 min
- Wed 5 Aug Max en route +37 min · last fix heading to Parla +32 min
Distribution · 90 days
63 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 41% · 26
- 3–10 min 27% · 17
- 10–30 min 22% · 14
- 30+ min 10% · 6
On-time by weekday
- 38% M n=13
- 38% T n=13
- 50% W n=12
- 42% T n=12
- 33% F n=12
- 100% S n=1
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 6 Oct | Colmenar Viejo 17:16 | +15 min | +20 min |
| Mon 5 Oct | Colmenar Viejo 17:02 | 0 min | +5 min |
| Fri 2 Oct | Colmenar Viejo 17:08 | 0 min | +8 min |
| Thu 1 Oct | Colmenar Viejo 17:07 | 0 min | +10 min |
| Wed 30 Sept | Colmenar Viejo 17:06 | +3 min | +11 min |
| Tue 29 Sept | Colmenar Viejo 17:13 | +9 min | +17 min |
| Mon 28 Sept | Colmenar Viejo 17:07 | +3 min | +11 min |
| Fri 25 Sept | Colmenar Viejo 17:05 | +1 min | +9 min |
| Thu 24 Sept | Colmenar Viejo 17:03 | 0 min | +8 min |
| Wed 23 Sept | Colmenar Viejo 17:05 | +1 min | +9 min |
| Tue 22 Sept | Colmenar Viejo 17:19 | +16 min | +24 min |
| Mon 21 Sept | Colmenar Viejo 17:04 | +1 min | +9 min |
| Fri 18 Sept | Colmenar Viejo 17:02 | 0 min | +14 min |
| Thu 17 Sept | Tres Cantos 17:26 | +32 min | +32 min |
| Wed 16 Sept | Colmenar Viejo 17:01 | 0 min | +8 min |
| Tue 15 Sept | Colmenar Viejo 17:04 | 0 min | +8 min |
| Mon 14 Sept | Colmenar Viejo 17:04 | 0 min | +9 min |
| Fri 11 Sept | Colmenar Viejo 17:08 | +4 min | +12 min |
| Thu 10 Sept | Colmenar Viejo 17:17 | +14 min | +22 min |
| Wed 9 Sept | Universidad-Cantoblanco 17:35 | +44 min | +48 min |
| Tue 8 Sept | Colmenar Viejo 17:03 | 0 min | +8 min |
| Mon 7 Sept | Colmenar Viejo 17:02 | 0 min | +7 min |
| Fri 4 Sept | Colmenar Viejo 17:01 | 0 min | +6 min |
| Thu 3 Sept | Colmenar Viejo 17:07 | +3 min | +12 min |
| Wed 2 Sept | Tres Cantos 16:53 | +1 min | +5 min |
| Tue 1 Sept | Colmenar Viejo 17:01 | 0 min | +7 min |
| Mon 31 Aug | Colmenar Viejo 17:12 | +8 min | +16 min |
| Fri 28 Aug | Parla 16:00 | +4 min | +4 min |
| Thu 27 Aug | Tres Cantos 17:05 | +10 min | +10 min |
| Wed 26 Aug | Colmenar Viejo 17:04 | +1 min | +9 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.