condition mean min max ZT0-3 40.1056 40.1056 40.1056 ZT4-7 32.6847 32.6847 32.6847 ZT8-11 22.314349999999997 22.314349999999997 22.314349999999997 ZT12-15 31.26615 31.26615 31.26615 ZT16-19 39.5222 39.5222 39.5222 ZT20-23 41.257400000000004 41.257400000000004 41.257400000000004