condition mean min max ZT0-3 0.007098383333333333 0.0 0.02129515 ZT4-7 0.0391104 0.0391104 0.0391104 ZT8-11 0.0 0.0 0.0 ZT12-15 0.01071715 0.0 0.0214343 ZT16-19 0.0 0.0 0.0 ZT20-23 0.03365805 0.03365805 0.03365805