condition mean min max ZT0-3 1.23204 1.23204 1.23204 ZT4-7 0.0 0.0 0.0 ZT8-11 1.700975 1.700975 1.700975 ZT12-15 3.3554649999999997 3.3554649999999997 3.3554649999999997 ZT16-19 3.418825 3.418825 3.418825 ZT20-23 0.0 0.0 0.0