WTF track mph question!

[25thmustang]

Alright, so I just walked in from the track. I never noticed before but when looking at the timeslips my 1/8th mph is ALL over the place. My 1/4 and 1/8th numbers don't really come close to matching each other. Any ideas, here are the breakdown of the 60', 1/8th mph and 1/4 mph. BTW everyone is powershifting at 5500-5600 RPM, no changes.

60'...1/8 mph...1/4 mph

1.983...87.07...105.44
2.010...83.85...105.65
1.955...86.74...105.86
1.967...83.62...105.69

look at those 1/8th mphs and let me know what you think it could be. Car was cool for every pass, driven the same, shifted the same, and ran very similar times (between 13.09 and 13.17).

 

[88mouse]

Did you hot lap it on the 2 and 4th run?

 

[25thmustang]

Nope every run the car sat for at least an hour to an hour and a half, and I did not start the car until about a minute or two before the run. I also don't have any shifts near the 1/8th that would cause it. 2-3 goes before the 1/8th, 3-4 well after it.

 

[grey5.0beast]

I also don't have any shifts near the 1/8th that would cause it. 2-3 goes before the 1/8th, 3-4 well after it.

That was what I was thinking. Hmm... weird.