Post-analysis.   Just battling to develop some data from a set of parallel tracks that go back and forth on the same water, so very crossed over.  The way I identify these samples is either:
a) Drop stripchart wands on the track in Expedition, then look at the data in Stripchart
b) Drop stripchart wands on likely samples in Stripchart, and verify on the track in Expedition.

If it was possible to uniquely identify the timestamp of a stripchart wand on the track in Expedition, perhaps with a hover, it would make this exercise much more friendly.  And I may not have explained this well.

DR