condition mean min max ZT0-3 24.45 24.45 24.45 ZT4-7 31.0 31.0 31.0 ZT8-11 37.55 37.55 37.55 ZT12-15 15.35 15.35 15.35 ZT16-19 34.45 34.45 34.45 ZT20-23 67.25 67.25 67.25