condition mean min max ZT0-3 1.0244255 0.8425659999999999 1.2062849999999998 ZT4-7 0.533535 0.533535 0.533535 ZT8-11 0.6753775 0.6753775 0.6753775 ZT12-15 0 0 0 ZT16-19 0.593425 0.593425 0.593425 ZT20-23 0.8069949999999999 0.8069949999999999 0.8069949999999999