condition mean min max ZT0-3 0.10035740450000001 0.046093768 0.15462104100000001 ZT4-7 0.44219505475000004 0.31468102600000003 0.5697090835 ZT8-11 0.346574513 0.245914976 0.44723405 ZT12-15 1.0011184929999999 0.3982741635 1.6039628225 ZT16-19 4.25814864875 2.4814486025 6.034848695 ZT20-23 18.80882018975 12.340447724499999 25.277192655