condition mean min max ZT0-3 0.0195233 0.0195233 0.0195233 ZT4-7 0.02962785 0.02962785 0.02962785 ZT8-11 0.0248241 0.0248241 0.0248241 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0249287 0.0249287 0.0249287 ZT20-23 0.0126736 0.0126736 0.0126736