Measurable Impressions
30/11/2019
The number of times an ad could be measured as on-screen or off-screen.
How It's Used
Measurable impressions shows the number of times our system was able to measure if an ad appeared in the viewable area of the screen, based on data from your javascript tag. This information can help you understand how many of the impressions served to a person we were able to measure as either on-screen or off-screen.
How It's Calculated
An impression is counted as a measurable impression if it was served to a person and our system was able detect that the ad was on or off-screen. You must use the javascript tag, which allows us to detect whether your ad appeared on or off-screen.
Further Reading
* Nguồn: Facebook