Sprinters: 5 x 100-yards free on 2:15

I use the color chart system as well. However, I modified my test set for sprinters. We do 5×100 free on 2:15. The average is the purple time. I reverse engineered all the equations to create the rest of the chart. For stroke we do 12×50 on 1:30. One fly one back one breast. Times 4. The average of each is then that’s strokes purple 50