condition mean min max ZT0-3 6.373295764750001 5.6138434875000005 7.132748042 ZT4-7 0.70054335775 0.0922612505 1.308825465 ZT8-11 70.69433213149999 7.228866238 134.159798025 ZT12-15 143.830600055 129.57073931000002 158.0904608 ZT16-19 74.996966555 53.44672653 96.54720658 ZT20-23 12.973031238749998 7.476603619 18.469458858499998