condition mean min max ZT0-3 149.3595 149.3595 149.3595 ZT4-7 125.7615 125.7615 125.7615 ZT8-11 100.9015 100.9015 100.9015 ZT12-15 229.84449999999998 229.84449999999998 229.84449999999998 ZT16-19 210.132 210.132 210.132 ZT20-23 174.012 174.012 174.012