These are the criteria we utilised to pick the prime on line s in the USA. http://git.mahaines.com/catherinespeer/powerball-computers/wiki/%ED%8C%8C%EC%9B%8C%EB%B3%BC%EB%A6%AC%ED%8F%AC%ED%8A%B8%EC%9E%91%EC%84%B1%3A-%EC%84%B1%EA%B3%B5%EC%A0%81%EC%9D%B8-%EC%A0%84%EB%9E%B5%EA%B3%BC-%ED%99%9C%EC%9A%A9%EB%B2%95