For most screens, Lucit uses the average daily impressions number to generate a number of impressions for each play that happens on your screens
This document describes the process for calculating digital out-of-home impressions using an avg daily number. If your digital signage software supports sending real-time impressions for every play or hourly impressions, then this document does not apply to you.
Play sometimes called a Spot, is when your creative appears on screen for the alloted slot length for that screen.
Slot Length Typically this is anywhere from 7 to 15 seconds depending on the settings for your screen. This is how long each individual ad appears on the screen before switching to a new ad.
Avg Daily Impressions The average daily impressions is the TOTAL impressions (on average) that your screen receives in a day. If you have been provided a Weekly Impression Number, you can divide that by 7 DAILY_IMPRESSION = (WEEKLY_IMPRESSIONS / 7) to get the Avg Daily Impressions number
86,400 - This is the total number of seconds in 1 day (24x60x60)
Time On Screen : Total amount of seconds that your ad was on screen.
Impressions per Play
From these numbers, you can calculate the number of impressions for a single play.
(AVG_DAILY_IMPRESSIONS / 86,400 ) x SLOT_LENGTH
For example, let's use:
Avg Daily Impressions : 52,000
Slot Length : 8 seconds
Your average impressions per spot will be
(52,000 / 86,400 ) x 8 = 4.81 impressions per play
Using this number, you can calculate the total impressions for a campaign based on the total number of plays
If a campaign received 40,000 plays in a 4 week period
40,000 * 4.81 = 192,000 impressions
Time on Screen
The total time on screen for your campaign is simply
TOTAL_PLAYS * SLOT_LENGTH
Using our example of 40,000 plays and an 8 second slot length
40,000 x 8 = 320,000 seconds = 88 Hours, 53 Minutes, 16 Seconds
These numbers are all based on averages over the course of a campaign, and because of the nature of digital billboards, the math is a bit different than just calculating total impressions for a static billboard over the course of a week