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ITA pace at every track

Lap times across years say as much about the weather as the class. % of the field is each class's best lap as a share of the field's on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks), so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.

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Reference · what % is measured against, 2 eventsall classes that day, as if at an average track
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Closest to the field: ITA 101.7% of the field Donald Squirek, Michelin Raceway Road Atlanta SARRC 2020 race

1:301:321:341:361:381:401:421:441:463 rule changes between Majors Apr 2016 and SARRC 20203 ▾ITA race best at SARRC 2020: 1:46.072 (Donald Squirek)ITA qualifying best at Majors Apr 2016: 1:30.560 (Don Wiseman)ITA qualifying best at SARRC 2020: 1:45.443 (Donald Squirek)Hallett Motor Racing Circuit · Majors Apr 2016Majors Apr2016Michelin Raceway Road Atlanta · SARRC 2020SARRC2020
ITAsolid race · dashed qualifying · slower is lowerHallett Motor Racing CircuitMichelin Raceway Road Atlanta
100.5%101%101.5%102%102.5%3 rule changes between Majors Apr 2016 and SARRC 20203 ▾ITA race best at SARRC 2020: 101.7% of Field's (Donald Squirek)ITA qualifying best at Majors Apr 2016: 100.8% of Field's (Don Wiseman)ITA qualifying best at SARRC 2020: 102.3% of Field's (Donald Squirek)Hallett Motor Racing Circuit · Majors Apr 2016Majors Apr2016Michelin Raceway Road Atlanta · SARRC 2020SARRC2020
ITAsolid race · dashed qualifying · each class's best lap as a share of the field's at the same event (the field index, changeable above); 100% is level, less is quicker, so up the chart is quickerHallett Motor Racing CircuitMichelin Raceway Road Atlanta
EventITA
Qual best Race best Trap % of the field 
Michelin Raceway Road Atlanta SARRC 20202020-07-251:45.443Donald Squirek · fastest of 3 · top 3 within 7.5s1:46.072Donald Squirek · fastest of 3 · top 3 within 6.9s110.4Donald Squirek101.7%qual 102.3%
3 rule changes (ITA: 3)1 induction · 1 tyres & wheels · 1 weightshowhide
  • Cleanup 4.f Traction control #28609tyres & wheels
  • Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbs
  • Request clarification on 9.1.3 D1.A.2 #26237induction
Hallett Motor Racing Circuit Majors Apr 20162016-04-091:30.560Don Wiseman · only car100.8% qual

By track

TrackEvents Typical % of the field Best Latest 
Hallett Motor Racing Circuit1100.8%100.8%Majors Apr 2016100.8%Majors Apr 2016
Michelin Raceway Road Atlanta1101.7%101.7%SARRC 2020101.7%SARRC 2020
About this data
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of the field's best on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks): the weather and the day cancel out, so one figure compares across years where lap times cannot, and across tracks too, since the class's own character at each track is taken out. A track with only one or two events on record is corrected less, since there is less to go on. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.