condition mean min max ZT0-3 233.394 233.394 233.394 ZT4-7 175.6155 175.6155 175.6155 ZT8-11 243.1805 243.1805 243.1805 ZT12-15 182.786 182.786 182.786 ZT16-19 301.929 301.929 301.929 ZT20-23 247.74450000000002 247.74450000000002 247.74450000000002