condition mean min max ZT0-3 0.015390366666666667 0.015390366666666667 0.015390366666666667 ZT4-7 0.038751799999999996 0.038751799999999996 0.038751799999999996 ZT8-11 0.0120382 0.0120382 0.0120382 ZT12-15 0.0239576 0.0239576 0.0239576 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0