condition mean min max ZT0-3 0.009438425 0.0 0.01887685 ZT4-7 0.05653305 0.05653305 0.05653305 ZT8-11 0.0374017 0.0374017 0.0374017 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.01861635 0.01861635 0.01861635