condition mean min max ZT0-3 164.7 164.7 164.7 ZT4-7 123.3 123.3 123.3 ZT8-11 105.25 105.25 105.25 ZT12-15 82.25 82.25 82.25 ZT16-19 109.9 109.9 109.9 ZT20-23 163.9 163.9 163.9