condition mean min max ZT0-3 125.7 125.7 125.7 ZT4-7 89.6 89.6 89.6 ZT8-11 50.2 50.2 50.2 ZT12-15 70.75 70.75 70.75 ZT16-19 126.9 126.9 126.9 ZT20-23 174.14999999999998 174.14999999999998 174.14999999999998