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Pareto — Rail Delay Minutes by Cause

Delay minutes attributed by cause across a commuter route's autumn period against the spring one, computing that 5 of 11 causes carry 80.9% of 34,500 minutes and that leaf-fall adhesion displaced signalling power supply from the vital few.

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Delay minutes by attributed cause — Anglia commuter routeAutumn period 7 vs Spring period 2 · 11 categories · total 34,500 delay minutes · threshold 80%Autumn period 7Spring period 2Cumulative %Cumulative % (Spring period 2)02,0004,0006,0008,00010,0000%20%40%60%80%100%80% threshold8,4207,6106,1805,2405,9404104,1204,4803,2603,8901,9802,1401,4701,6201,2101,1808609401,0601,59024.4%42.3%59.5%71.5%80.9%86.7%90.9%94.4%96.9%100%vital few · 5Track circuit failureTrespass and cable theftAdhesion and railhead treatmentPoints failureFleet door and traction faultsSignalling power supplyOverhead line dewirementPassenger taken illBridge strikeOther5 of 11 categories (45%) account for 80.9% of 34,500 delay minutes.Vital few at 80%: Track circuit failure, Trespass and cable theft, Adhesion and railhead treatment, Points failure, Fleet door and traction faults —27,920 of 34,500 delay minutes.Those categories covered 74.3% of the Spring period 2 total (29,100 delay minutes), against 80.9% of Autumn period 7.Movement vs Spring period 2: entered — Adhesion and railhead treatment; left — Signalling power supply.Other folds 2 categories under 2% of total (1,060 delay minutes, 3.1%).Delay attributed to the infrastructure manager and the operator combined

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title "Delay minutes by attributed cause — Anglia commuter route"
unit delay minutes
period "Autumn period 7"
compare "Spring period 2"
threshold 80%
other-below 2%
note "Delay attributed to the infrastructure manager and the operator combined"

# cause                              Autumn   Spring
"Track circuit failure"                8420     7610
"Trespass and cable theft"             6180     5240
"Adhesion and railhead treatment"      5940      410
"Points failure"                       4120     4480
"Fleet door and traction faults"       3260     3890
"Signalling power supply"              1980     2140
"Overhead line dewirement"             1470     1620
"Passenger taken ill"                  1210     1180
"Bridge strike"                         860      940
"Level crossing misuse"                 640      710
"Staff unavailable"                     420      880