condition mean min max ZT0-3 30.15 30.15 30.15 ZT4-7 55.0 55.0 55.0 ZT8-11 67.9 67.9 67.9 ZT12-15 69.05 69.05 69.05 ZT16-19 54.85 54.85 54.85 ZT20-23 51.099999999999994 51.099999999999994 51.099999999999994