condition mean min max ZT0-3 68.15 68.15 68.15 ZT4-7 44.7 44.7 44.7 ZT8-11 56.25 56.25 56.25 ZT12-15 62.35 62.35 62.35 ZT16-19 70.3 70.3 70.3 ZT20-23 54.35 54.35 54.35