condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.10378514500000001 0.0 0.20757029000000002 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.13221577766666667 0.0 0.26443155533333335