Looks to me like there might be a variance in when the clocks are tripped at the 60 ft and 330? Does the front ride high? Real lose? The one slow pass (7?) first thing I thought of was it may not have been straight. I lose a bunch after the 60 ft if the car makes a move one way or the other.
Also, might be a touch off on the tuneup some where to throw the numbers just a bit on the incrementals Vs total ET?
The thought just occurred to me that if you manually shift, a variance in shift rpm might skew the numbers, but the right powerband may average it out. My ETs got more consistent by over .01 when I went to the air shifter. The 1/2 shift came at the end of the wheelstand and I wasn't consistent enough.