condition mean min max ZT0-3 0.119918 0.119918 0.119918 ZT4-7 0.0 0.0 0.0 ZT8-11 0.123618 0.123618 0.123618 ZT12-15 0.0 0.0 0.0 ZT16-19 0.46567749999999997 0.46567749999999997 0.46567749999999997 ZT20-23 0.26335200000000003 0.26335200000000003 0.26335200000000003