condition mean min max ZT0-3 9.0958825 8.2689 9.922865 ZT4-7 5.626825 5.626825 5.626825 ZT8-11 3.38795 3.38795 3.38795 ZT12-15 0 0 0 ZT16-19 4.42452 4.42452 4.42452 ZT20-23 9.682929999999999 9.682929999999999 9.682929999999999