condition mean min max ZT0-3 0.30264166666666664 0.0 0.907925 ZT4-7 0.0 0.0 0.0 ZT8-11 0.913355 0.913355 0.913355 ZT12-15 0.5047675 0.0 1.009535 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0