condition mean min max ZT0-3 100.4 100.4 100.4 ZT4-7 68.1 68.1 68.1 ZT8-11 112.2 112.2 112.2 ZT12-15 164.35 164.35 164.35 ZT16-19 158.3 158.3 158.3 ZT20-23 77.1 77.1 77.1