Graph descriptions: AVG Race Finish % by Year -- Average %-ile in race, broken down by classes each
year; mAP by Year -- Average yearly Modified Advancement Points (where Zero is average), broken down by classes each
year; Overall % by Year -- performance by year compared to average riders at that age.
--see further details/viewing instructions below the graph -- also see What?/Why?/Who? above for more about the data used-- Enjoy! Feedback welcomed
Graph Descriptions/Tableau viewing
Selecting a name
The graphs/tables display info for one rider at a time.  All riders can be found in "Full Name" at the top right, and you can narrow the list by entering text in the filter's dropdown menu.  Similar names are sometimes distinguished by the Rider's home state in ().
AVG Race Finish % by Year
This graph shows what percentile, on average, the rider finished his races in each class in each year (keep in mind this is only A, B, and Open classes).  It does not account for the quality of the competition (i.e., Loretta Lynn's Area/Regionals/Finals).  Lower numbers are better, just like with tradtional rankings.
AVG mAP by Year
This graph shows the average Modified Advancement Points earned per race in each class of each year (again only A, B, and Open classes).
Overall % by Year
This larger graph shows how well the rider performed each year relative to ALL pro and amateur riders, and compares to the average rider at that age (gray line).
AVG Rank Overall: average finishing position (i.e., 3.0 = 3rd);
AVG Race %-ile: average finishing %-ile;
AVG mAP: Average Modified Advancement Points per race;
TOTAL mAP: Total mAP per class per year at each qualifier level;
AVG Time vs Heat (sec): number of seconds below (negative) or above (positive) average compared to the race/heat;
AVG Z-Score: Average number of standard deviations better than average (positive number) or worse than average (negative number);
AVG Z-Score Rank: Average rank in race based on Z-Score;
AVG Z-Score Race %-ile: Average %-ile rank in race based on Z-Score.
Lap Times Z-Score by Year
Compares the rider's lap time to the average in the rider's heats/races, averaged per year and class.  Higher is better, where positive 2 would mean 2 Standard Deviations above average, or -1 would be 1 Standard Deviation below average.
Lap Times True Z-Score by Year
Same as Z-Score by Year, but uses the Z-Score calculated on laps finished successfully by the rider and omits laps where the rider had an especially long lap before exiting the race.