The forecast metrics for the planless keyword campaign.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/services/keyword_plan_idea_service.proto)

| Fields ||
|---|---|
| ## `average_cpa_micros` | `int64` Average cost per acquisition calculated as cost_micros / conversions. |
| ## `average_cpc_micros` | `int64` The average cpc. Available only if clicks \> 0. |
| ## `click_through_rate` | `double` The average clickthrough rate (CTR). Available only if impressions \> 0. |
| ## `clicks` | `double` The total number of clicks. |
| ## `conversion_rate` | `double` Forecasted conversion rate. |
| ## `conversions` | `double` Forecasted number of conversions: clicks \* conversion_rate. |
| ## `cost_micros` | `int64` The total cost. |
| ## `impressions` | `double` The total number of impressions. |