condition mean min max ZT0-3 5.545375 5.545375 5.545375 ZT4-7 3.0827799999999996 3.0827799999999996 3.0827799999999996 ZT8-11 3.817 3.817 3.817 ZT12-15 5.95779 5.95779 5.95779 ZT16-19 7.783 7.783 7.783 ZT20-23 5.80848 5.80848 5.80848