The timings that I have listed are from one IP address, and the activity is listed within one block or segment, one after another. The visitor's timing of each page view is recorded, within one box, in one place, as one entry.
Yes, there is no foolproof way of finding out whether the activity is related to approval or just traffic coming in. But, in this case, it happens to be the only activity recorded for the approved pages and the timings coincidentally coincide with the approval time of the said articles. It's easy to do the math with this available data.
There were no other visits recorded for 23 March, the day the articles got approved articles. There is just one visitor, and the activity shows that person jumping from one article to another. These articles incidentally happen to be the approved articles.
"A love affair with knowledge will never end in heartbreak" - Michael Garrett Marino