Dirk,The intervals are precisely 0.2s (video frame time anyway),
Does that mean that you marked every 5th frame in PAL videos (that have frame intervals of .04 seconds) to get your path plots or were you able to get de-interleaved frames that would have a frame interval of .02 (not .2 seconds)?
My plot of Tim was taken from a NTSC video that had a frame rate of 30 fps. You can see there were about 7 frames that were marked to get the hand path in that plot, which means it only took about (7-1)/30 (.2 seconds) for Tim to make his forward cast.
I see a similar number of solid lines on your plots which would imply an interval of around .04 seconds between them since I would expect the time to make a forward cast would be in the same ball park for Stefan and Fredrik as it was for Tim.
Gordy