condition mean min max ZT0-3 34.967349999999996 34.967349999999996 34.967349999999996 ZT4-7 23.62555 23.62555 23.62555 ZT8-11 20.70775 20.70775 20.70775 ZT12-15 28.3985 28.3985 28.3985 ZT16-19 37.55805 37.55805 37.55805 ZT20-23 40.42185 40.42185 40.42185