condition mean min max ZT0-3 909.6500000000001 909.6500000000001 909.6500000000001 ZT4-7 850.0 850.0 850.0 ZT8-11 571.4 571.4 571.4 ZT12-15 564.55 564.55 564.55 ZT16-19 745.0 745.0 745.0 ZT20-23 796.45 796.45 796.45