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FM 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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Series
Reference · what % is measured against, 5 eventsall classes that day, as if at an average track
Tracks · untick to narrow

Closest to the field: FM 84.1% of the field Bryce Cornet, Sonoma Raceway Runoffs 2018 race

1:402:002:20FM race best at Runoffs 2015: 1:58.029 (Joseph Burton-Harris)FM race best at Runoffs 2016: 1:27.922 (Jacob Loomis)FM race best at Runoffs 2017: 1:41.146 (Jarret Voorhies)FM race best at Runoffs 2018: 1:37.909 (Bryce Cornet)FM race best at Runoffs 2019: 2:15.816 (Bryce Cornet)FM qualifying best at Runoffs 2015: 1:57.804 (Joseph Burton-Harris)FM qualifying best at Runoffs 2016: 1:26.043 (Jacob Loomis)FM qualifying best at Runoffs 2017: 1:41.231 (Jarret Voorhies)FM qualifying best at Runoffs 2018: 1:37.598 (Bryce Cornet)FM qualifying best at Runoffs 2019: 1:55.124 (Bryce Cornet)Daytona International Speedway · Runoffs 2015Runoffs2015Mid-Ohio Sports Car Course · Runoffs 2016Runoffs2016Indianapolis Motor Speedway · Runoffs 2017Runoffs2017Sonoma Raceway · Runoffs 2018Runoffs2018Virginia International Raceway · Runoffs 2019Runoffs2019
FMsolid race · dashed qualifying · slower is lowerDaytona International SpeedwayIndianapolis Motor SpeedwayMid-Ohio Sports Car CourseSonoma RacewayVirginia International Raceway
85%90%95%100%FM race best at Runoffs 2015: 85.6% of Field's (Joseph Burton-Harris)FM race best at Runoffs 2016: 86.7% of Field's (Jacob Loomis)FM race best at Runoffs 2017: 85.7% of Field's (Jarret Voorhies)FM race best at Runoffs 2018: 84.1% of Field's (Bryce Cornet)FM race best at Runoffs 2019: 100.0% of Field's (Bryce Cornet)FM qualifying best at Runoffs 2015: 86.3% of Field's (Joseph Burton-Harris)FM qualifying best at Runoffs 2016: 85.9% of Field's (Jacob Loomis)FM qualifying best at Runoffs 2017: 86.5% of Field's (Jarret Voorhies)FM qualifying best at Runoffs 2018: 87.1% of Field's (Bryce Cornet)FM qualifying best at Runoffs 2019: 86.5% of Field's (Bryce Cornet)Daytona International Speedway · Runoffs 2015Runoffs2015Mid-Ohio Sports Car Course · Runoffs 2016Runoffs2016Indianapolis Motor Speedway · Runoffs 2017Runoffs2017Sonoma Raceway · Runoffs 2018Runoffs2018Virginia International Raceway · Runoffs 2019Runoffs2019
FMsolid 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 quickerDaytona International SpeedwayIndianapolis Motor SpeedwayMid-Ohio Sports Car CourseSonoma RacewayVirginia International Raceway
EventFM
Qual best Race best Trap % of the field 
Virginia International Raceway Runoffs 20192019-10-051:55.124Bryce Cornet · fastest of 8 · top 5 within 2.3s2:15.816Bryce Cornet · fastest of 8 · top 5 within 4.9s135.7Bryce Cornet100.0%qual 86.5%
No rule changes on record between these events
Sonoma Raceway Runoffs 20182018-10-101:37.598Bryce Cornet · fastest of 13 · top 5 within 0.9s1:37.909Bryce Cornet · fastest of 12 · top 5 within 1.3s124.1Melvin David Kemper Jr84.1%qual 87.1%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:41.231Jarret Voorhies · fastest of 16 · top 5 within 1.7s1:41.146Jarret Voorhies · fastest of 16 · top 5 within 1.2s85.7%qual 86.5%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:26.043Jacob Loomis · fastest of 8 · top 5 within 3.1s1:27.922Jacob Loomis · fastest of 8 · top 5 within 2.7s86.7%qual 85.9%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-211:57.804Joseph Burton-Harris · fastest of 10 · top 5 within 2.3s1:58.029Joseph Burton-Harris · fastest of 10 · top 5 within 1.7s85.6%qual 86.3%

By track

TrackEvents Typical % of the field Best Latest 
Daytona International Speedway185.6%85.6%Runoffs 201585.6%Runoffs 2015
Indianapolis Motor Speedway185.7%85.7%Runoffs 201785.7%Runoffs 2017
Mid-Ohio Sports Car Course186.7%86.7%Runoffs 201686.7%Runoffs 2016
Sonoma Raceway184.1%84.1%Runoffs 201884.1%Runoffs 2018
Virginia International Raceway1100.0%100.0%Runoffs 2019100.0%Runoffs 2019
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.