condition mean min max ZT0-3 60.120000000000005 60.120000000000005 60.120000000000005 ZT4-7 3.26294 3.26294 3.26294 ZT8-11 2.32299 2.32299 2.32299 ZT12-15 11.831 11.831 11.831 ZT16-19 80.79785 80.79785 80.79785 ZT20-23 193.481 193.481 193.481