condition mean min max ZT0-3 109.89999999999999 109.89999999999999 109.89999999999999 ZT4-7 67.5 67.5 67.5 ZT8-11 114.7 114.7 114.7 ZT12-15 176.25 176.25 176.25 ZT16-19 86.7 86.7 86.7 ZT20-23 92.4 92.4 92.4