condition mean min max ZT0-3 164.89083333333332 159.0855 175.548 ZT4-7 163.96699999999998 163.96699999999998 163.96699999999998 ZT8-11 183.6055 183.6055 183.6055 ZT12-15 191.14325 188.3885 193.898 ZT16-19 188.53699999999998 188.53699999999998 188.53699999999998 ZT20-23 173.7615 173.7615 173.7615