condition mean min max ZT0-3 0.0187692 0.0187692 0.0187692 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0448231 0.0448231 0.0448231 ZT12-15 0.05991294999999999 0.05991294999999999 0.05991294999999999 ZT16-19 0.012915433333333332 0.012915433333333332 0.012915433333333332 ZT20-23 0.0 0.0 0.0