condition mean min max ZT0-3 10.82727 9.042315 12.612225 ZT4-7 14.945799999999998 14.945799999999998 14.945799999999998 ZT8-11 13.34915 13.34915 13.34915 ZT12-15 0 0 0 ZT16-19 10.054645 10.054645 10.054645 ZT20-23 10.874465 10.874465 10.874465