condition mean min max ZT0-3 0.9497648635 0.438102235 1.4614274919999999 ZT4-7 3.2713534887500004 1.606934904 4.935772073500001 ZT8-11 9.98454388375 7.6388191225 12.330268645 ZT12-15 17.628720035 16.334433240000003 18.92300683 ZT16-19 19.520769125 18.494353535000002 20.547184715 ZT20-23 39.076632127500005 28.51499938 49.638264875000004