condition mean min max ZT0-3 59.95 59.95 59.95 ZT4-7 46.8 46.8 46.8 ZT8-11 44.75 44.75 44.75 ZT12-15 36.55 36.55 36.55 ZT16-19 59.25 59.25 59.25 ZT20-23 49.099999999999994 49.099999999999994 49.099999999999994