Metrics calculated by aggregating values of a single metric.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/services/benchmarks_service.proto)

| Fields ||
|---|---|
| ## `clicks` | `double` The number of clicks received. |
| ## `cost` | `double` The total cost paid by the customer. Cost is represented in USD by default, if unspecified in the request. |
| ## `engagements` | `double` The number of engagements. Engagements are ad interactions such as expanding a lightbox Ad or clicking on a video teaser. See <https://support.google.com/google-ads/answer/2375431> for more information on engagements. |
| ## `impressions` | `double` The number of times the Ad was shown to users. |
| ## `interactions` | `double` The number of interactions. Interactions include physical clicks, engagements, and video views that are logged as clicks. See <https://support.google.com/google-ads/answer/2375431> for more information on interactions. |
| ## `video_trueview_views` | `double` The number of video TrueView views. See <https://support.google.com/google-ads/answer/2375431> for more information on TrueView Views. |
| ## `viewable_impressions` | `double` The number of impressions that are considered viewable according to the Active View criteria. See <https://support.google.com/google-ads/answer/7029393> for more information on Active View. |