condition mean min max ZT0-3 4413.799999999999 4413.799999999999 4413.799999999999 ZT4-7 3814.9 3814.9 3814.9 ZT8-11 3257.3 3257.3 3257.3 ZT12-15 2104.7 2104.7 2104.7 ZT16-19 1634.35 1634.35 1634.35 ZT20-23 2435.6000000000004 2435.6000000000004 2435.6000000000004