This depends on your niche, Google Adsense smart pricing, traffic source, country of visitors and your website layout.
Hi, Everything depends on the niche and keywords. For example I have a site in Spanish, on weight loss that it generates between $ 0.15 and $ 0.25 per day, with only 70 visitors a day. Not much, but it is additional income without having to pay attention to the site. Greetings. Nicolas