condition mean min max ZT0-3 1.0061805000000001 0.93879 1.073571 ZT4-7 0.920126 0.920126 0.920126 ZT8-11 3.904565 3.904565 3.904565 ZT12-15 0 0 0 ZT16-19 4.456605 4.456605 4.456605 ZT20-23 3.0285200000000003 3.0285200000000003 3.0285200000000003