condition mean min max ZT0-3 151.34125 148.913 153.7695 ZT4-7 163.7665 163.7665 163.7665 ZT8-11 159.499 159.499 159.499 ZT12-15 0 0 0 ZT16-19 154.892 154.892 154.892 ZT20-23 143.79149999999998 143.79149999999998 143.79149999999998