condition mean min max ZT0-3 350.85 350.85 350.85 ZT4-7 110.7 110.7 110.7 ZT8-11 125.75 125.75 125.75 ZT12-15 136.14999999999998 136.14999999999998 136.14999999999998 ZT16-19 266.15 266.15 266.15 ZT20-23 393.5 393.5 393.5