condition mean min max ZT0-3 118.75 118.75 118.75 ZT4-7 138.9 138.9 138.9 ZT8-11 97.55 97.55 97.55 ZT12-15 92.4 92.4 92.4 ZT16-19 105.69999999999999 105.69999999999999 105.69999999999999 ZT20-23 116.95 116.95 116.95