condition mean min max ZT0-3 146.25099999999998 146.25099999999998 146.25099999999998 ZT4-7 126.999 126.999 126.999 ZT8-11 200.136 200.136 200.136 ZT12-15 215.2975 215.2975 215.2975 ZT16-19 163.0875 163.0875 163.0875 ZT20-23 145.239 145.239 145.239