condition mean min max ZT0-3 60.0 60.0 60.0 ZT4-7 22.8 22.8 22.8 ZT8-11 63.55 63.55 63.55 ZT12-15 34.1 34.1 34.1 ZT16-19 50.45 50.45 50.45 ZT20-23 35.099999999999994 35.099999999999994 35.099999999999994