condition mean min max ZT0-3 0.6605697500000001 0.402886 0.9182535000000001 ZT4-7 0.7171925 0.7171925 0.7171925 ZT8-11 0.3026435 0.3026435 0.3026435 ZT12-15 0 0 0 ZT16-19 0.300831 0.300831 0.300831 ZT20-23 0.7046685 0.7046685 0.7046685