condition mean min max ZT0-3 98.0783084775 89.322029155 106.83458780000001 ZT4-7 35.568849219 25.912880793 45.224817645 ZT8-11 10.005850376 8.078203919 11.933496833 ZT12-15 13.731278413 8.924198245500001 18.5383585805 ZT16-19 30.8796837075 29.12540601 32.633961405 ZT20-23 29.113819785 24.426302370000002 33.8013372