adTrends Values

The adTrends field is returned in the response from both adMetrics and advertiserMetrics methods.

Here's an example of values you might see in a typical response and how to interpret them.

Example	Meaning
{ "30": -75, "90": 150 }	Each value represents the percentage increase/decrease of ad impact between the first third and final third of the date range key. The value -75 in this example means that the ad impact over the final 10 days of the last 30 days was 75% lower than that of the first 10 days of the same period. The value 150 in this example means that the ad impact over the final 30 days of the last 90 days was 150% greater than the first 30 days of the same period.

Example

Meaning

{
    "30": -75,
    "90": 150
}

Each value represents the percentage increase/decrease of ad impact between the first third and final third of the date range key.

The value -75 in this example means that the ad impact over the final 10 days of the last 30 days was 75% lower than that of the first 10 days of the same period.

The value 150 in this example means that the ad impact over the final 30 days of the last 90 days was 150% greater than the first 30 days of the same period.

Special Values

The following special values may be returned as part of the adTrends field.

Special Value	Meaning
10000	The maximum change for trending is 10,000%, which means that the average ad impact over the final third of the period was at least 101 times a large as the average ad impact over the first third of the period, but that the first third's impact was non-zero.
20000	Special value meaning that the average ad impact over the final third of the period was non-zero, but it was zero over the first third. In other words, this is a new advertiser or ad.
-200	Special value meaning that the average ad impact over the first third and the final third of the period were both zero, but it was non-zero over the middle third. In other words, this was an ephemeral advertiser or ad.
-100	Not really a special value, but this means that the average ad impact over the first third of the period was non-zero, but it was zero over the final third of the period. In other words, this ad or advertiser's run ended during the period.