condition mean min max ZT0-3 29.85 29.85 29.85 ZT4-7 19.4 19.4 19.4 ZT8-11 42.599999999999994 42.599999999999994 42.599999999999994 ZT12-15 33.95 33.95 33.95 ZT16-19 30.099999999999998 30.099999999999998 30.099999999999998 ZT20-23 41.95 41.95 41.95