Thanks Ron for your clarification.
As you suggested off line, I post links to the close up image:
https://www.dropbox.com/s/gx20mul24o...aleV3.pdf?dl=0
The left image is the turn back near IGARI, the right a similarly sharp, but plausible, corner soon after take off.
And the calcs relating the circles to turn radii of different bank angles:
https://www.dropbox.com/s/3hhc8toqwx...Calcs.pdf?dl=0
Also thanks 10W and Dave Reid for your responses.
Re track smoothing, is that an automated processing feature performed by software? If so, is this step performed prior to recording the data or during the extraction of data from the records in the database?
Re Dave's mentioning of "editor", are you referring to a human putting the graphic together manually and while doing so ommitting the second loop of the figure of eight?
Cheers
Will