I don't undersand your question alpaslan. It depends on your traffic and the visitors how many times they click on Adsense ads.
Traffic = $$$ So try to get lot of traffic in order to earn some good money. Also, it is possible that 50 people visit your site and your earn $2 and its also possible that 1000 people visit your site and you earn $2 Depends on ads placements, CTR etc
I get about 500 unique visitors per day to one of my site. To earn money, you have to get a lot of traffic which may vary from 100 to 100,000 or more uniques a day and better, if it is targeted traffic. Better CTR can be achieved in the adsense earning by suitable ad placement and blending
You could do ok today with minimal traffic and tomorrow get good traffic and get no clicks, but generally you want to strive for increasing your traffic, its understood that if your increasing your traffic your increasing your chances. But the quality of traffic counts too, often SE traffic can convert better than other ways, because people searching in the se's are clearly looking for something.
There's nothing like minimum and maximum when it comes to traffic for making money. The PPC depends on your niche. So, try to build traffic.