Статистика

[birdwatcher]

The overall ratio is one bathroom for every 70 fans, Anthony Montalto, the lead architect for the stadium, told the paper. That exceeds the national average and meets the city's code. That ratio, though, includes a one-to-one ratio of women's to men's toilets, according to the Sun-Times. Because the NFL fan base is between 60 to 70 percent male, the ratio puts the average fan at a disadvantage, the paper reported.

http://www.nbc5.com/news/2676669/index.html?subid=10101401

Я думаю, правильнее всего понимать в том смысле, что average fan is 65% male.