 <p>The unique event count for an action is the number of visits in which that action took place.</p> <p>The total unique events in this report should equal the sum of unique events on all rows, not the number of rows. This is because a unique event is based on unique action-visit combinations, and each row has a different action.</p> <p>In other words, if an action is repeated within a visit, the unique event count is not incremented, but otherwise it is.</p> <p>So if one of the rows has 2 unique events that would mean that the event action was triggered in 2 separate visits, and both these visits would be included in the overall unique events.</p> <p>In your example, the first 10 actions in your report only occurred for 1 visit each (they may even have all been the same visit - you can't tell from this report).</p> <p>So I'm guessing that on the second page of your example there are two rows with 0 unique events, and the rest have 1 unique event - so that they add up to 21 unique events.</p>