condition mean min max ZT0-3 203.98149999999998 185.28449999999998 222.67849999999999 ZT4-7 305.2645 305.2645 305.2645 ZT8-11 301.20050000000003 301.20050000000003 301.20050000000003 ZT12-15 0 0 0 ZT16-19 350.33299999999997 350.33299999999997 350.33299999999997 ZT20-23 239.7575 239.7575 239.7575