condition mean min max ZT0-3 0.22572615399999998 0.20234382899999998 0.249108479 ZT4-7 1.65261702825 0.229538976 3.0756950804999996 ZT8-11 12.067612780000001 9.897170545 14.238055015 ZT12-15 8.60071835675 6.484555565499999 10.716881148 ZT16-19 4.66261830675 3.993057298 5.3321793154999995 ZT20-23 8.84491347275 6.564930197999999 11.1248967475