for example in a back to back race over 2 days a Saturday and a sunday I made 11 passes all with in .03 of each other. that was exceptional couple days but usually within a tenth over the course of a few races and weather changes. low 10.20's to low 10.30's the extremes this year was 10.19 on a 56* day and 10.36 on a 96* day. 60's run 1.42 to 1.43. the 10.36 was a 1.45. i have had several race days where i kept the car within a .05 window on e.t. but my reaction times again are always anybody's guess lol