condition mean min max ZT0-3 1.1817739999999999 1.110823 1.252725 ZT4-7 1.4979145 1.4979145 1.4979145 ZT8-11 4.6117799999999995 4.6117799999999995 4.6117799999999995 ZT12-15 0 0 0 ZT16-19 3.900665 3.900665 3.900665 ZT20-23 2.977655 2.977655 2.977655