condition mean min max ZT0-3 171.75 171.75 171.75 ZT4-7 146.9 146.9 146.9 ZT8-11 138.8 138.8 138.8 ZT12-15 165.05 165.05 165.05 ZT16-19 145.75 145.75 145.75 ZT20-23 152.4 152.4 152.4