condition mean min max ZT0-3 110.01291666666667 98.2598 118.5095 ZT4-7 71.32355000000001 71.32355000000001 71.32355000000001 ZT8-11 35.924749999999996 35.924749999999996 35.924749999999996 ZT12-15 29.590000000000003 29.06405 30.11595 ZT16-19 39.13195 39.13195 39.13195 ZT20-23 72.91624999999999 72.91624999999999 72.91624999999999