Notes
At the Peachtree Ridge HS track doing an easy 8 in heat. 88F with 65F dew poing = TDP of 153 = 1.048 * 10:30 = 11:00, but if I add on 10F for the direct sun, that gives TDP of 163 = 1.64 * 10:30 = 11:10. Actually averaged 11:11 for miles 2 through 8.