condition mean min max ZT0-3 62.25 62.25 62.25 ZT4-7 28.7 28.7 28.7 ZT8-11 46.9 46.9 46.9 ZT12-15 57.45 57.45 57.45 ZT16-19 24.9 24.9 24.9 ZT20-23 45.099999999999994 45.099999999999994 45.099999999999994