condition mean min max ZT0-3 0.027359 0.0 0.054718 ZT4-7 0.0556545 0.0556545 0.0556545 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.3783745 0.3783745 0.3783745