condition mean min max ZT0-3 510.5555 510.5555 510.5555 ZT4-7 539.4269999999999 539.4269999999999 539.4269999999999 ZT8-11 434.4 434.4 434.4 ZT12-15 284.619 284.619 284.619 ZT16-19 356.2685 356.2685 356.2685 ZT20-23 478.3185 478.3185 478.3185