The performance charts in AdSense provide a visual representation of the key metrics that are important for tracking the performance of your ads. Here are some of the key metrics tracked in AdSense performance charts and their explanations:

  1. Impressions: The number of times an ad is displayed on a website.

  2. Clicks: The number of times a user clicks on an ad.

  3. Click-through rate (CTR): The percentage of impressions that result in clicks. CTR is calculated by dividing the number of clicks by the number of impressions and multiplying by 100.

  4. Cost per click (CPC): The amount an advertiser pays for each click on their ad.

  5. Page RPM: Revenue per thousand impressions. Page RPM is calculated by dividing estimated earnings by the number of page views and multiplying by 1000.

  6. Active View viewable impressions: The number of impressions that meet the MRC/IAB definition of a viewable impression. An impression is considered viewable when at least 50% of the ad is visible on the user's screen for at least one second.

  7. Coverage: The percentage of ad requests that resulted in at least one ad impression. A low coverage percentage can indicate issues with ad targeting, ad formats, or website performance.

  8. Cost per thousand impressions (CPM): The amount an advertiser pays for every thousand ad impressions.

These metrics are important for understanding the performance of your AdSense ads and optimizing them to maximize your revenue. By monitoring these metrics over time, you can identify trends and make changes to your ad placements, targeting, and formats to improve their performance