1f fractions: The last two 1f fractions of the last race. I take the four values from the last two races and sort them in lowest to highest value order.
12.3 12.2 11.9 12.0 > 11.9 12.0 12.3 12.2 25.5 23.9 low to high order
Late Speed/Mph: The last 1f fractions (including mph converted speed) of the last race.
1f fractions: The last two 1f fractions of the last race. I take the four values from the last two races and sort them in lowest to highest value order.
12.3 12.2 11.9 12.0 > 11.9 12.0 12.3 12.2 25.5 23.9 low to high order
Late Speed/Mph: The last 1f fractions (including mph converted speed) of the last race.