condition mean min max ZT0-3 1842.9283333333333 1682.725 1952.29 ZT4-7 1721.185 1721.185 1721.185 ZT8-11 1653.325 1653.325 1653.325 ZT12-15 2435.4224999999997 2303.495 2567.35 ZT16-19 2310.9049999999997 2310.9049999999997 2310.9049999999997 ZT20-23 1847.1599999999999 1847.1599999999999 1847.1599999999999