Data increase or decrease depending on time spent. “0 seconds” will be displayed if you spent less than 150 milliseconds on the zone.
If you scroll fast from the top to the bottom of the page, the middle page will not be taken into account as the scroll movement is too fast to consider the zones in the middle have been exposed.
How it's calculated
Time the mid-height pixel line of the zone is visible when it is displayed after having at least spent 150 milliseconds on the zone.
Note: We collect and show exposure metrics based on 100% of traffic.
How to interpret it
How long do visitors spend consuming a piece of content — whether or not they end up clicking on it?
Find the gems hidden under the fold! Here, visitors spent 11.1 seconds below the fold, proving they are interested in this content.