condition mean min max ZT0-3 26.727600000000002 26.727600000000002 26.727600000000002 ZT4-7 24.0094 24.0094 24.0094 ZT8-11 22.2671 22.2671 22.2671 ZT12-15 25.027749999999997 25.027749999999997 25.027749999999997 ZT16-19 31.7415 31.7415 31.7415 ZT20-23 30.805799999999998 30.805799999999998 30.805799999999998