condition mean min max ZT0-3 203.891 192.57999999999998 215.834 ZT4-7 231.5065 231.5065 231.5065 ZT8-11 269.37 269.37 269.37 ZT12-15 348.222 330.904 365.53999999999996 ZT16-19 380.353 380.353 380.353 ZT20-23 272.3855 272.3855 272.3855