The Lighthouse Average report provides information for analyzing the performance of a website. It helps you to improve the user experience by providing metrics and insights about your web pages. It displays the following details: :

• Page name: The page name which is analyzed.
• Host name: Name of the host.
• Group: Name of the group.
• Session Count: Number of sessions run for testing.
• Performance Score (%): Performance is the speed at which a website loads. Lighthouse returns a Performance score between 0 and 100. 0 is the lowest possible score. 100 is the best possible score which represents the 98th percentile, a top-performing site. A score of 50 represents the 75th percentile. An important performance metric is the Speed index.
• Accessibility Score (%): Accessibility is the design of products, devices, services, or environments for people with disabilities. The Accessibility score is a weighted average of all the accessibility audits.  The heavier-weighted audits have a bigger impact on your score.
• Best Practice Score (%): Best Practices is a list of audits that check common mistakes in web development. Lighthouse returns a Best Practices score between 0 and 100. The Best Practices audits are equally weighted.
• SEO:  Search engine optimization (SEO) is the process of increasing the quality and quantity of website traffic by increasing the visibility of a website or a web page to users of a web search engine. A website with a high SEO score will end up higher in the search results than a website with a low SEO score.
• First Meaningful Paint (sec): It marks the time (in a sec) at which the first text or image is painted.
• Time to Interact (sec): It is the amount of time it takes for the page to become fully interactive.
• First CPU Idle (sec): It marks the first time at which the page’s main thread is quiet enough to handle input.
• Speed index (ms): It shows how quickly the contents of a page are visibly populated.