condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.2833785 0.2833785 0.2833785 ZT8-11 0.0 0.0 0.0 ZT12-15 0.18948475 0.0 0.3789695 ZT16-19 0.0 0.0 0.0 ZT20-23 0.6162055 0.6162055 0.6162055