condition mean min max ZT0-3 142.8 142.8 142.8 ZT4-7 114.6 114.6 114.6 ZT8-11 119.05000000000001 119.05000000000001 119.05000000000001 ZT12-15 159.8 159.8 159.8 ZT16-19 132.35000000000002 132.35000000000002 132.35000000000002 ZT20-23 163.7 163.7 163.7