Course Activity Report Details (New Analytics)

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I downloaded a .csv Course Activity Report using these instructions, but I'd like more details on exactly what each column tells me. Does the "last viewed" column give the time when the student's last view started or ended? Is there a query where I can see the times of the student's intermediate views and not just the first and last views on each page? Can the end time and not just the start time of each view be determined? Thanks!