Google Analytics gives you the information on how the visitors found your website. Also that it can be used to make the site more search engine friendly by allowing the access to the site's statistics.
By using Google analytics of your website you can know the visitor's status.you can use it at the end of the header section of your website.
Google Analytics (GA) is a free service offered by Google that generates detailed statistics about the visitors to a website. Its main highlight is that the product is aimed at marketers as opposed to webmasters and technologists from which the industry of web analytics originally grew It is a free web analytics tool offering detailed visitor statistics. The tool can be used to track all the usual site activities: visits, page views, pages per visit, bounce rates and average time on site etc. But it can also be used to specifically track Adsense traffic ?
Google Analytic is a very prominent toolbar to analyze as well as measure the traffic count, visitors count, bounce rate, and many more things.