condition mean min max ZT0-3 37.544799999999995 33.644549999999995 41.445049999999995 ZT4-7 29.32295 29.32295 29.32295 ZT8-11 33.324799999999996 33.324799999999996 33.324799999999996 ZT12-15 0 0 0 ZT16-19 36.564750000000004 36.564750000000004 36.564750000000004 ZT20-23 36.16665 36.16665 36.16665