This is a core concept
Media summary gauge is a detailed view of respondent and conversion metrics for all media types (i.e. email, social content, search engine) and vehicles (i.e newsletter email, Facebook, Google) setup in a given portfolio, campaign, creative or traffic source. When creating a traffic source, you will be prompted to select a category and a sub-category. The category defines the media type of a given traffic source while the sub-category defines the vehicle.
The media summary gauge will show how many total respondents visited your portfolio, campaign, creative or traffic source within a given period of time as well as the conversion rate for each vehicle. You will also find average metrics in bold at the bottom of this chart.
*NOTE: The +/- percentage shows the conversion rate’s statistical margin of error, based on the number of respondents