condition mean min max ZT0-3 0.08030425 0.0518965 0.108712 ZT4-7 0.3994375 0.3994375 0.3994375 ZT8-11 1.1892505 1.1892505 1.1892505 ZT12-15 0 0 0 ZT16-19 0.156909 0.156909 0.156909 ZT20-23 0.0547205 0.0547205 0.0547205