condition mean min max ZT0-3 54.0857 54.0857 54.0857 ZT4-7 42.25705 42.25705 42.25705 ZT8-11 33.593199999999996 33.593199999999996 33.593199999999996 ZT12-15 30.8419 30.8419 30.8419 ZT16-19 46.2693 46.2693 46.2693 ZT20-23 54.403999999999996 54.403999999999996 54.403999999999996