condition mean min max ZT0-3 0.011787383333333333 0.0 0.0237801 ZT4-7 0.01135305 0.01135305 0.01135305 ZT8-11 0.0119158 0.0119158 0.0119158 ZT12-15 0.005816225 0.0 0.01163245 ZT16-19 0.0115529 0.0115529 0.0115529 ZT20-23 0.0255899 0.0255899 0.0255899