condition mean min max ZT0-3 99.42765 99.42765 99.42765 ZT4-7 53.5763 53.5763 53.5763 ZT8-11 44.39775 44.39775 44.39775 ZT12-15 43.729749999999996 43.729749999999996 43.729749999999996 ZT16-19 70.46605 70.46605 70.46605 ZT20-23 106.4025 106.4025 106.4025