The In-Ad Dashboard presents a summary and timeline of ad impressions, highlighting their validity and viewability across various dimensions. A table titled “Ad Impressions by Line Items: Validity and Viewability” serves as a navigational guide. To dive deeper, simply click on a line item you're interested in. This action activates the “Apply Filter to Current View” feature, which tailors the dashboard's display to only show information pertinent to the selected line item.