ARM Report Definitions

Metric

Definition

Average Brand Exposure Duration (sec) Time each ad impression was on the page.
Estimated Total Brand Exposure Duration (min) Total number of minutes ad was on the page.
Average Brand Exposure Duration * Impressions / 60
Average Expansion/Main Phase (per imp with expansion) The average number of times a user expanded the ad (only for ads that were expanded, not averaged across all ads). To get total number of expansions use the following formula: “Average Expansion/Main Phase” * “Impressions with Expansion”
Average Interaction Time (per impression) Average time the ad was expanded. To get this metric per interaction you will use the following formula: “Average Interaction Time”  / “Average Expansion Main Phases”
Average Time to First Expansion (once per impression) Average time the ad was on the page before the user expanded the ad “Good metric because you can see on a placement level as well as creative how long it took for the user to expand.”
Average Time to First Interaction (once per impression) Average time the ad was on the page before the user interacted with it, i.e. expanded it or triggered one of the defined events.
Impression with Interaction Total impressions that had an Interaction i.e. expand, main phase, a defined event, or clickthrough.
Impressions with Expansion Total impressions that had an Expand or Main phase.
Interaction Rate The current metric within My Reports may not suit your needs.  Use the following formula to calculate a true interaction rate: “Impression with interaction” / “Impressions”