Dropped samples

[Six_Shooter]

I did a datalog tonight, a fairly long one, of over 10000 samples, not the longets I've done, I have a couple that are over 20000 samples.

Anyway, I noticed at one point, shortly after the log started, around 3300 samples that I'm missing complete seconds, not just one, but a few, it jumps from 637 to 642 engine run seconds, with a few samples at 642, and then jumps to 648 engine run seconds.

I haven't noticed this on any other datalogs, not that I've gone through them sample by sample, but I've looked at the WOT portion of most and only noticed posibly a sample or two dropped, as in I would have 7 samples per second instead of 8.

Later in the same log, there were complete seconds sampled, at WOT again.

Any reason for this?

BTW I'm running a '7749 with $59 v18.