condition mean min max ZT0-3 25.035249999999998 25.035249999999998 25.035249999999998 ZT4-7 16.35675 16.35675 16.35675 ZT8-11 19.7779 19.7779 19.7779 ZT12-15 18.71465 18.71465 18.71465 ZT16-19 33.18965 33.18965 33.18965 ZT20-23 28.8784 28.8784 28.8784