condition mean min max ZT0-3 0.08078966666666666 0.0 0.1304505 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.05559075 0.0 0.1111815 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0