condition mean min max ZT0-3 28.571766666666665 25.4745 30.380200000000002 ZT4-7 23.80815 23.80815 23.80815 ZT8-11 24.09015 24.09015 24.09015 ZT12-15 32.318025 30.5514 34.084649999999996 ZT16-19 35.8312 35.8312 35.8312 ZT20-23 33.5547 33.5547 33.5547