condition mean min max ZT0-3 12.844449999999998 12.844449999999998 12.844449999999998 ZT4-7 11.1631 11.1631 11.1631 ZT8-11 12.4409 12.4409 12.4409 ZT12-15 11.9942 11.9942 11.9942 ZT16-19 17.39985 17.39985 17.39985 ZT20-23 12.5583 12.5583 12.5583