condition mean min max ZT0-3 10572.0 10572.0 10572.0 ZT4-7 7698.5 7698.5 7698.5 ZT8-11 7755.4 7755.4 7755.4 ZT12-15 7220.85 7220.85 7220.85 ZT16-19 9487.8 9487.8 9487.8 ZT20-23 10163.85 10163.85 10163.85